EP1908865A2 - Dispositif pour l'insertion de trame, en particulier sur un dispositif pour la fabrication d'étoffes en canevas - Google Patents

Dispositif pour l'insertion de trame, en particulier sur un dispositif pour la fabrication d'étoffes en canevas Download PDF

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Publication number
EP1908865A2
EP1908865A2 EP07466020A EP07466020A EP1908865A2 EP 1908865 A2 EP1908865 A2 EP 1908865A2 EP 07466020 A EP07466020 A EP 07466020A EP 07466020 A EP07466020 A EP 07466020A EP 1908865 A2 EP1908865 A2 EP 1908865A2
Authority
EP
European Patent Office
Prior art keywords
warp threads
rollers
weft
assigned
insertion channel
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.)
Withdrawn
Application number
EP07466020A
Other languages
German (de)
English (en)
Other versions
EP1908865A3 (fr
Inventor
Milan Stejskal
Jaroslav Fábera
Robert Klepl
Jaroslav Havlík
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.)
Vyzkumny Ustav Textilnich Stroju Liberec AS
Original Assignee
Vyzkumny Ustav Textilnich Stroju Liberec AS
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 Vyzkumny Ustav Textilnich Stroju Liberec AS filed Critical Vyzkumny Ustav Textilnich Stroju Liberec AS
Publication of EP1908865A2 publication Critical patent/EP1908865A2/fr
Publication of EP1908865A3 publication Critical patent/EP1908865A3/fr
Withdrawn legal-status Critical Current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
    • D03D47/28—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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D9/00—Open-work fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/12—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with filaments or yarns secured together by chemical or thermo-activatable bonding agents, e.g. adhesives, applied or incorporated in liquid or solid form

Definitions

  • the invention relates to the device for weft insertion, especially on device for laid scrim fabrics production comprising means for laying of warp threads and means for guiding of warp threads through the working path to the delivery device and further to the device for bonding of the fabric, while the means for guiding of warp threads through the working path comprise at least one pair of rollers and the device for weft insertion comprises the air insertion means and it is assigned to each inlet of warp threads in between each pair of rollers.
  • the laid fabrics e.g. the "laid scrim" type are the fabrics, which in their principle are of a grid arrangement, at which individual warp threads have mutual spacing and also individual weft threads have mutual spacing.
  • These fabrics are used to various purposes, according to character of threads or fibres used for their production, e.g. at usage of finer threads or fibres these textiles may be used as a reinforcement into the letter envelopes, if stronger (rougher) threads or fibres are used, these textiles may be applied e.g. for industrial purposes, etc. Textiles are bonded, e.g. by a glue, which after getting dry ensure fabric coherency in a given geometric arrangement similarly as for example at gauze fabrics.
  • the branches of warp threads are fed in between a pair of rollers, between which they are joined again, while in the place before joining the branches of warp threads between the rollers, the wefts are inserted in between the warp threads, through which a semi-product of a laid scrim fabric with wefts between the warp threads is created, which by embracement around a part of the roller circumference is delivered to delivery device for further production operations, like bonding of the fabric, etc.
  • the weft is subject to a stream of auxiliary air during and/or after insertion of weft in between the branches of warp threads.
  • the warp threads before insertion of wefts are separated into branches, which are after then gradually joined together between pairs of rollers and in each place before joining together the branches of warp threads between the rollers the wefts are inserted in between the warp threads.
  • one from series of wefts inserted on all insertion devices is inserted in between the warp threads, immediately one after another.
  • the formed fabric by means of alternating embracement around a part of roller's surface is kept under tension and is guided to the delivery device for further processing.
  • CZ PV 2004 - 159 also discloses a device for production of laid fabrics comprising means for placing of warp threads and means for guiding of warp threads through the working path to the delivery device and further to the device for fabric bonding.
  • the means for guiding the warp threads through the working path contain at least one pair of rollers, in between which are separately guided always two branches of warp threads, while in the direction of motion of warp threads to the area before inlet of warp threads between each pair of rollers there is assigned an insertion weft device, and behind each pair of rollers there is situated a tensioning device of laid fabric semi-product to a section of circumference of one from the pair of rollers, while after the last pair of rollers there is situated the delivery device of the laid fabric semi-product for further processing.
  • the insertion weft device is at the same time formed by an air insertion device with an air insertion nozzle.
  • the insertion device further comprises an auxiliary weft insertion device for delivery of the weft to the space between the two branches of warp threads between the pair of rollers.
  • the goal of the invention is to remedy or at least minimise shortcomings of the present background art, especially through improvement of weft insertion by air.
  • the goal of the invention has been reached by the device for weft insertion, especially on device for production of laid scrim fabrics whose principle consists in that in area before inlet of warp threads in between each pair of rollers there is along the rollers positioned a hollow body, in cavity of which there is performed an insertion channel, while the wall of the body is interrupted by a longitudinal slot along a whole body length in the place against an inlet of warp threads in between the rollers.
  • a mechanical transfer device of weft from the insertion channel into an inlet of warp threads between the roller which according to an advantageous embodiment comprises a pair of hinged levers coupled with the drive and allocated to opened ends of insertion channel, while the axis around which the hinged levers are swinging, is parallel with longitudinal axis of the insertion channel.
  • an outlet of at least one air insertion nozzle of weft thread and cutting device of the weft thread is assigned to the body from one opened face side, while the weft stop with weft tensioner and weft thread cutting device are assigned to the second opened face side of the body.
  • the body is formed by a tube, whose wall is interrupted by a longitudinal slot.
  • the tube on its rear side is equipped with continuous grooves, that connect the insertion channel with external space behind the body.
  • the body contains a flat lower body on whose rear part by its rear section there is positioned a prismatic upper body, while on upper and lower body along the whole length of body there are positioned additional slats, between whose free ends that are situated in the space of warp thread inlet in between the rollers, there is a longitudinal slot along the whole body length, while in the upper body there are positioned the blowing nozzles and air transfer nozzles.
  • the upper body along the whole length of the insertion channel is provided by a system of lateral continuous grooves, which connect the insertion channel with external space behind the body.
  • the invention is schematically represented on the drawing, where the Fig. 1 shows arrangement of the place of weft insertion, the Fig. 2 one exemplary embodiment of the body with insertion channel, the Fig. 3 arrangement of picking mechanism on one end of the body with insertion channel, the Fig. 4 arrangement of picking mechanism on the second end of the body with the insertion channel and the Fig. 5 a perspective view on embodiment of the body with the insertion channel from the Fig. 2.
  • the method and device according to CZ PV 2004 - 159 consists in that, the warp threads are separated into branches, which are independently brought in between a pair of rollers, between which they join together again and further as joined they are delivered by embracement around a section of circumference of one of the rollers to further processing.
  • the wefts are inserted between the warp threads so that in between the rollers the fabric with the wefts inserted between the warp threads is being fed, and by embracement around a section of circumference of one of the rollers the wefts are held in the required position between the warp threads until bonding of the fabric, e.g.
  • weft insertion in between the branches of warp threads before their entry in between the rollers may be supported by usage of auxiliary media acting in principle crosswise to the motion direction of wefts or askew in the motion direction of wefts and improving the positioning of wefts between the warp threads, e.g. similarly as the known blowing nozzles at the weaving machines.
  • the Fig. 1 represents a schematic arrangement of a device for weft insertion between the warp threads upon production of laid fabric, which contains a pair distanced one from another separation rollers 1, through which always one branch a , b of the warp threads is guided. Both branches a, b of the warp threads are guided between the rollers 2 , which rotate in direction of the arrows x y . In the space before entry of warp threads in between the rollers 2 there is situated the insertion device of weft by acting of the insertion air.
  • the weft insertion device comprises the insertion channel 30, which is performed in cavity of the body 3, which is arranged along the rollers 2 in the space before entry of warp threads in between the rollers 2 .
  • the wall of the body 3 in the place against entry of warp threads in between the rollers 2 along a whole length of the body 3 is interrupted by a longitudinal slot 31, through which a weft outlet from the insertion channel 30 is performed into a space between the branches a, b of warp threads on the rollers 2 .
  • the body 3 is from both face sides opened into the insertion channel 30, while to one opened face side there is assigned an outlet of not represented at least one air insertion nozzle 300 of the weft thread and here is also situated the cutting device 301 of the weft thread and an auxiliary transfer nozzle 302 for transfer of weft end being outside the insertion channel 30 into the space between the branches a, b of the warp threads between the rollers 2.
  • the cutting device 304 of the weft thread and a second auxiliary transfer nozzle 305 for transfer of weft end being outside the insertion channel 30 into the space between the branches a, b of the warp threads between the rollers 2.
  • blowing nozzles 32 to support weft insertion through the whole length of the insertion channel 30, while the outlet openings of an air streaming from the blowing nozzles 32 are situated in the insertion channel 30 and they are for example by means of some of the known manners directed in the direction of weft insertion and/or askew to the direction of weft insertion.
  • the air transfer nozzles 33 of the weft for weft transfer from the insertion channel 30 through a longitudinal slot 31 into the space between the branches a , b of the warp threads between the rollers 2 , while the outlet openings of air transfer nozzles 33 are situated in the insertion channel 30 towards the longitudinal slot 31 .
  • Mechanical transfer device as an example comprises a pair of hinged levers coupled with the drive and assigned to opened ends of the insertion channel 30, while the axis, around which the hinged levers are swinging, is parallel with a longitudinal axis of the insertion channel 30.
  • the body 3 is formed by a flat lower body 34, on whose rear section 341 with its rear section 351 there is mounted a prismatic upper body 35 .
  • additional slats 36 On the upper and lower body 35, 34 along a whole length of the body 3 there are positioned additional slats 36 , between whose free ends, which are situated in the space of entry of the warp threads in between the rollers 2, along the whole length of the body 3 there is a space creating a longitudinal slot 31 .
  • the insertion channel 30 is delimited by additional slats 36, by the upper body 35 and the lower body 34.
  • the blowing nozzles 32 and the air transfer nozzles 33 In the upper body 35 there are mounted the blowing nozzles 32 and the air transfer nozzles 33.
  • the upper body 35 along its whole length, is provided by a system of lateral continuous grooves 350, which connect the insertion channel 30 with an external space behind the body 3 .
  • the body 3 is performed in another suitable manner, e.g. it is formed of a tube of a suitable size and shape of cross-section of an inner space, which forms the insertion channel 30.
  • the wall of the tube in an appropriate place is interrupted to create a longitudinal slot 31 .
  • To the tube there are assigned the air nozzles and further equipment for insertion of the weft into the insertion channel 30.
  • the tube may be provided with continuous grooves to improve weft insertion by air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Looms (AREA)
EP07466020A 2006-10-05 2007-10-04 Dispositif pour l'insertion de trame, en particulier sur un dispositif pour la fabrication d'étoffes en canevas Withdrawn EP1908865A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ2006-626A CZ304646B6 (cs) 2006-10-05 2006-10-05 Zařízení pro zanášení útků, zejména na zařízení k výrobě kladených textilií

Publications (2)

Publication Number Publication Date
EP1908865A2 true EP1908865A2 (fr) 2008-04-09
EP1908865A3 EP1908865A3 (fr) 2009-07-01

Family

ID=39009623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07466020A Withdrawn EP1908865A3 (fr) 2006-10-05 2007-10-04 Dispositif pour l'insertion de trame, en particulier sur un dispositif pour la fabrication d'étoffes en canevas

Country Status (2)

Country Link
EP (1) EP1908865A3 (fr)
CZ (1) CZ304646B6 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3505665A1 (fr) * 2017-12-28 2019-07-03 VÚTS, a.s. Textile technique et dispositif pour sa fabrication

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005073444A1 (fr) * 2004-01-29 2005-08-11 Vyzkumny Ustav Textilnich Stroju Liberec A.S. Procede de production de canevas et dispositif utile a cet effet

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3639954A (en) * 1969-12-31 1972-02-08 Kirson Gmbh Apparatus for making a reinforced web

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005073444A1 (fr) * 2004-01-29 2005-08-11 Vyzkumny Ustav Textilnich Stroju Liberec A.S. Procede de production de canevas et dispositif utile a cet effet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3505665A1 (fr) * 2017-12-28 2019-07-03 VÚTS, a.s. Textile technique et dispositif pour sa fabrication

Also Published As

Publication number Publication date
CZ2006626A3 (cs) 2008-04-16
CZ304646B6 (cs) 2014-08-20
EP1908865A3 (fr) 2009-07-01

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