EP2963171A1 - Method of manufacturing textile grid, its installation and related equipment - Google Patents

Method of manufacturing textile grid, its installation and related equipment Download PDF

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Publication number
EP2963171A1
EP2963171A1 EP15175099.9A EP15175099A EP2963171A1 EP 2963171 A1 EP2963171 A1 EP 2963171A1 EP 15175099 A EP15175099 A EP 15175099A EP 2963171 A1 EP2963171 A1 EP 2963171A1
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EP
European Patent Office
Prior art keywords
carousel
belts
weft
parallel
axis
Prior art date
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Granted
Application number
EP15175099.9A
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German (de)
French (fr)
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EP2963171B1 (en
Inventor
Régis Mussier
Hugues Bernard
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Porcher Industries SA
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Porcher Industries SA
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Publication of EP2963171A1 publication Critical patent/EP2963171A1/en
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    • 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
    • D04H3/02—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
    • D04H3/045—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 for net manufacturing
    • 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
    • D04H3/07—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 otherwise than in a plane, e.g. in a tubular way
    • 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 a textile grid manufacturing method, an installation and related equipment.
  • the grid is a textile article consisting of warp threads and weft threads, crossed at 90 ° (other angle values are also possible) and fixed together, generally by gluing.
  • a grid is characterized by the types of yarn used in warp and weft, by their density or texture (number of threads per centimeter in warp and weft), and by the type of glue.
  • the grid manufacturing consists of the following elements: unwinding the warp threads, removing weft threads perpendicular to the warp threads, gluing, drying, and winding.
  • Different methods have been developed for depositing the weft threads, for example by means of a continuously rotating arm with a fixed weft feed, the continuous deposition back and forth, with fixed feed also, or by injection of the weft son.
  • the unwinding or removal of the weft threads on the warp threads is the factor limiting the rate of production of the grids and a breaking factor of the weft threads.
  • the removal by a rotating arm generates bursts of speed when the arm passes around the elements defining the banks.
  • the FR 2,377,467 describes a method and an installation for manufacturing a textile grid in which we wind weft yarns substantially parallel to a kind of carousel having a substantially cylindrical shape generated by the outer strands of endless belts parallel to each other and to the axis of the carousel and moving in an adjustable manner and synchronous with the rotational speed of a wire feed arm rotating around the carousel.
  • the son removal system is advantageously two fields and comprises a rotatable tubular arm mounted on a rotating shaft, each frame being fed from fixed supports that can be equipped with reserves. Wire-like elements are applied to the wires on either side of a cutting axis, which elements are then used to spread and flatten the cut weft son.
  • the object of the invention is to provide a method and an installation making it possible to overcome the various disadvantages of the prior art and to speed up the rate of production of the grids, from the unwinding of the weft threads to the assembly of the wire rack.
  • Another object of the invention is to propose such a method and such an installation making it easy to modify the width of the width of the weft son.
  • the two generating belts are preferably arranged on either side and parallel to the upper or lower generatrix, more preferably the upper, of the substantially cylindrical shape generated by the carousel of belts.
  • Ribbons are driven in the same direction and at the same linear speed as the belts.
  • it is the selvedges formed by cutting contiguous ribbons that are driven and drag with them the ribbons from their reel.
  • the two ribbons comprise an adhesive face each, because this ensures a good maintenance of the weft son trapped between them, regardless of the title of the wire.
  • the tapes are made of a material giving them flexibility and sufficient mechanical strength and tearing for their implementation in the invention, when the tapes are unwound, guided, contiguous and after cutting into two half-ribbons contiguous, then spaced and driven throughout the process, while being easily cut in the middle.
  • an optionally reinforced polymeric material for example by wires, a nonwoven or a textile.
  • Such ribbons are commercially available in the usual manner or can be specially developed, without this exceeding the normal skills of those skilled in the art.
  • the ribbon is presented in rolls, with rolls typically holding 500 to 10,000 meters of ribbon.
  • the adhesive is of a nature to unroll the adhesive tape and to adhere sufficiently to the other tape for the needs of the process and the above mechanical performance.
  • the width of the ribbon is also adapted to facilitate longitudinal cutting and for good maintenance and guidance selvedges after cutting. Typically, this width can be between about 0.5 and about 5 cm, especially between about 1 and about 3 cm, for example about 2 cm.
  • the width of the selvedges further allows better contact and guidance at the return rollers, and the application device of the warp son. It also makes it possible to guarantee these functions for various cut frame lengths, in line with the possibility of adjusting the diameter of the carousel.
  • the flat structure of the selvedges further promotes flattening and maintaining tension in the lateral direction of the weft yarns downstream of the carousel, in particular because the particular traction forces are then exerted over the entire width of the selvedge .
  • the son can be brought continuously in contact with the perimeter of the carousel by a relative rotational movement around the carousel.
  • the removal of all the son can be done on the same perpendicular plane (plane of removal) to the axis of the carousel.
  • the set of coils is itself in relative rotation about an axis aligned with the axis of the carousel.
  • the son are unrolled continuously from this set of coils in rotation, are brought to the right of the laying plane on the carousel and deposited on it by a same movement of revolution around the plane of deposit.
  • the son are continuously deposited in a helical spiral through the advancement of the carousel belts.
  • the linear speed of the belts (and ribbons) and / or the speed of removal of the weft yarns on the carousel can be adjusted according to the pitch of the desired weft threads, and this step is the pitch of the weft threads in the final grid.
  • the number of weft yarns deposited on the carousel makes it possible to regulate this step, and also the rate of production for the same carousel circumference, this rate being even higher when a larger number of weft threads.
  • One or more of these factors can be used to adjust the production rate for a given carousel circumference and thus for a given width or width of weft threads. You can also play on one or more of these factors depending on the desired contexture for the grid.
  • the circumference of the carousel is adjusted by varying the distance of all or part of the belts to the axis of the carousel, and in doing so the final width of the sheet of weft threads is adjusted.
  • one acts on all the belts except the two generating belts and possibly the two diametrically opposite belts.
  • all the belts are movable, including the generating belts, and in this case, if necessary, we replace the weft son deployed in the horizontal plane corresponding to the insertion plane in contact with, or between the son of chain.
  • Fixing the warp son and weft son at their intersection points can be achieved by any known means, including gluing or welding if the material constituting the son allows.
  • the attachment is provided by gluing.
  • the network can be deposited on warp threads, or warp threads deposited on it, or deposited between two layers of threads. of chain. Then, it is possible to glue, preferably between two gluing rolls, and then to dry. It can then pass between two call rolls and / or on a winder (storage roll of the grid formed). All this can be done continuously, e.g. until the weft yarns are exhausted.
  • a carousel comprising between 4 and 30, preferably between 12 and 20 belts, is used.
  • the method is not limited by the number of weft yarns (from different coils) that are deposited. According to one mode of implementation, one winds from 2 or 3 to 200, preferably from 10 to 30 weft yarns (from different reels) on the carousel.
  • the rotation speed of removal of the son on the carousel can be in particular between 1 and 1000 revolutions per minute (rpm), preferably between 50 and 500 rpm.
  • the linear speed of the belts may especially be between 1 and 100 m / min, preferably between 5 and 50 m / min.
  • the installation may comprise a rotating assembly carrying at least one coil receiving means for receiving a weft yarn package and a weft yarn distribution means from the package.
  • the carousel can be aligned with the axis of the rotating assembly (machine axis). It can be mounted motionless on this axis.
  • the rotation of the rotating assembly and the advance of the belts allows the successive removal of evenly spaced weft threads on the surface of the carousel.
  • the wires are deposited in a helical spiral.
  • the circumference of the carousel determines the width of the weft of weft yarns.
  • the carousel comprises means for adjusting the distance of all or part of the belts with respect to the machine axis. This therefore makes it possible to vary the circumference of the carousel and therefore the width of the width of the weft threads.
  • the carousel may comprise, at its two ends, two trays, advantageously circular, comprising synchronous deployment means of the belts for varying the circumference of the carousel.
  • the belts may in particular be carried by guides, the trays may be provided with grooves or slides extending from a position near the center of the plate to a remote position, the guides may be inserted into these grooves or slides, and they can be moved synchronously between a position defining a minimum circumference of the carousel and a position defining a maximum circumference of the carousel, and be immobilized in the desired position by a suitable clamping or locking means.
  • the carousel may include as many belts as necessary to provide a seat and a guide adapted to the weft son according to the circumference of the carousel.
  • the width of the belts and therefore the seating that each can provide may vary.
  • the carousel may have between 4 and 30, preferably between 12 and 20 belts.
  • the belts may be flat or have a substantially circular section. It is preferably flat belts, which may have for example a width of between about 10 and about 50 mm. 2 so-called generator belts are preferably placed parallel and on either side of the upper or lower generatrix, preferably upper of the cylindrical shape of the carousel.
  • the belts can be made of any material and have any structure, reinforced or not, toothed or not, conventional. For example, reinforced polyurethane timing belts can be used.
  • the installation may comprise, near the carousel, two tape reel unwinders, ribbons at least one of which is adhesive, first ribbon guide means from one of these unwinders, these first means being arranged in a manner to be able to bring, in particular passing through the exit end of the carousel, a first ribbon inside the carousel, between the two outer strands of the two generating belts and parallel to the machine axis, and second guide means of ribbon from the other of these unwinders, these second means being arranged so as to bring a second ribbon outside the carousel, between the two outer strands of the generator belts and parallel to the machine axis.
  • the installation may further comprise application means, including wheels or rollers, arranged so as to be able to apply the two ribbons against each other as and when they pass between these application means.
  • the ribbons take the threads sandwiched across the full width of the ribbons.
  • Ribbon drive means may be arranged so as to be able to drive the ribbons, at the speed of movement of the carousel belts, from their unwinder and through the application means, and then to a parallel cutting device. machine axis disposed downstream of the application means between the two outer strands of the generating belts.
  • the cutting device separates the two contiguous ribbons in their middle, giving two selvedges formed of two half-ribbons contiguous (taking the weft son sandwich).
  • the tape drive means preferably act on these selvedges that pull the ribbons from their unwinders.
  • the two generating belts preferably located at the top of the carousel, define between them the space in which the ribbons circulate, are contiguous and then cut in their middle.
  • the cutting device may comprise a circular knife and possibly a bearing surface, for example.
  • the installation may comprise two return means arranged downstream and away from the carousel, preferably on a horizontal plane and at a distance from each other substantially equal to the circumference of the carousel.
  • These two return means provided in particular with return rollers or the like, receive the selvedges.
  • the spacing of the return rollers can be advantageously adjustable to accommodate the setting of the circumference of the carousel. When the edges are passed by these return rollers, they can be kept parallel, and the web of weft son is spread out substantially flat.
  • the rotating assembly may comprise a variable number of coil receiving means. It may in particular comprise from 2 to 200, preferably from 10 to 30.
  • the weft distribution means may comprise a frame distribution ring. It may also comprise weft guides arranged so as to guide the son coming from the coils towards the surface of the carousel, on the son removal plan. Preferably, it comprises as many frame guides as the assembly turning account of coil receiving means. Weft guides are advantageously regularly distributed on the distribution ring.
  • the installation may also include frame guides upstream of the distribution ring. At least some of these frameguides can advantageously be used to put the son in tension.
  • the installation may further comprise a device for placing the web or the network of weft son in contact with one or two layers of warp son.
  • this device may comprise two parallel rollers, placed substantially perpendicular to the machine axis, and downstream of the return rollers. At least one of the rollers can be mobile, to adjust an air gap.
  • the installation may comprise means for feeding warp threads along the machine axis between these rollers. It may also include means for guiding the selvedges between the rollers and at each end thereof so as to allow insertion and entrainment of the weft son between the rollers.
  • the installation can be configured to bringing warp threads following two plies, between which the weft son are interposed during the passage between the rollers.
  • the installation may comprise a set of sizing known per se, for fixing these sheets together at their crossing points. It is thus possible to use glue rollers with means for applying an adjustable pressure.
  • the rotating assembly can be rotated by a motor whose rotation speed is preferably adjustable.
  • the rotational speed can be in particular between 1 and 1000 revolutions per minute (rpm), preferably between 50 and 500 rpm.
  • the installation may also comprise motorized means for driving on the one hand the carousel belts and selvedges and ribbons, at a synchronous speed.
  • the linear speed of the belts and selvedges may especially be between 1 and 100 m / min, preferably between 5 and 50 m / min.
  • the carousel of belts that has been described in connection with the installation is also an object of the invention. It may comprise at least 4, preferably at least 12 endless belts regularly distributed around and parallel to a central axis, these belts each extending between two wheels located in a plane parallel to the central axis and all the strands. external belts generating a substantially cylindrical shape.
  • the belts are capable of being moved synchronously and in the same direction with the outer strands moving from a starting plane perpendicular to the axis to a plane of arrival perpendicular to the axis.
  • the carousel may further comprise ribbon feeding means arranged under the lower face of two adjacent belts, arranged so as to circulate a ribbon between the two outer strands of the two belts and substantially in the plane of these strands.
  • These belts are called generatrices, they are placed preferably parallel and on either side of the upper or lower generatrix, preferably higher, of the cylindrical shape of the carousel.
  • the figure 1 illustrates a rotating assembly, referred to as "turbine", in which the coils 1 of frames are embedded.
  • the number of field coils can vary, the set being provided for eighteen frames.
  • the turbine consists of two plates 2 carrying nine pins 3 each (expansion pins allowing accurate retention of the coils), and a frame distribution assembly consisting of a plate 4, a crown 5 of distribution of the frames, the ring 5 being connected to the plate 4 by eighteen rods 6 arranged every 20 ° and carrying the frame guides 7.
  • the plate 4 and the ring 5 comprise orifices 8 forming a weft guide distributed every 20 ° also.
  • the frame guides 7 and 8 are arranged to allow the guiding of a wire.
  • the raster guides 7 have the additional function of straining the wire.
  • Trays 2 and 4 are integral, fixed on a rotating shaft 6 motorized.
  • the rotating assembly is designated as a whole by reference numeral 9.
  • the figure 2 shows a carousel 10 consisting of twelve belts 11.
  • the belts 11 are distributed around a central axis so that all of their outer strands is a substantially tubular shape, twelve faces, comparable to a cylinder.
  • the belts 11 all extend from the same plane perpendicular to the axis of the carousel, conventionally defined as the upstream plane, and located in the vicinity of a first so-called entrance end of the carousel.
  • the belts With the exception of the two generating belts (those located at the top of the carousel), the belts all extend to a second plane perpendicular to the carousel axis, defined as a downstream plane, and located in the vicinity of the carousel.
  • the belts 11 generators are shorter and extend to a third plane perpendicular to the axis of the carousel 10, defined as an intermediate plane.
  • the direction of rotation of the belts causes their outer strands to move from the upstream plane towards the downstream plane or the intermediate plane, as the case may be.
  • the wheels 12 of the belts 11 are mounted in pairs on common axes, each forming a carriage 13 (six carriages for the six pairs of belts).
  • the carriages comprise at each of their ends a guide 14.
  • the carousel comprises a median shaft 15 carrying in the vicinity of its two ends, a circular plate 16. These plates 16 comprise grooves 17 extending from a position close to the shaft 15 at a position close to the outer edge of the plate 16.
  • the guides 14 of four of the carriages 13 are retained in the grooves 17, the joint displacement of these guides 14 and corresponding carriages 13 for varying the circumference of the carousel 10. Adjust is locked by a suitable means, represented by a locking screw 18.
  • the two upper and lower carriages are fixed, which explains that the discs have only four grooves.
  • the carousel also comprises means, not visible, synchronous drive belts.
  • the carousel 10 is aligned in the axis of the rotating assembly 9 and disposed partly inside the ring 5 of distribution of the frames such that this ring is disposed substantially in line with the upstream plane.
  • the coordinated rotational movements of the rotating assembly 9 and the advance of the belts 11 generate a regular and continuous winding of the eighteen frames on the carousel 10, in the form of eighteen parallel helical spirals advancing along the machine axis.
  • the speed of the belts 11 The pitch of the spirals is equal to the ratio between the linear speed of the belts 11 and the speed of rotation of the rotating assembly 9.
  • Two unwinders 19 of adhesive tape 20 are positioned at each end of the carousel 10 and offset with respect to the machine axis of the carousel ( figure 4 ).
  • Guide elements of the adhesive tapes allow the passage of a ribbon inside the carousel, the other arrives from above.
  • the two ribbons 20 are applied against each other on the top of the carousel between the two upper belts said generators, and sandwich the son of frames, according to a generator.
  • the installation comprises application means, not shown, in particular rollers or rollers, arranged so as to be able to apply the two ribbons against each other as they pass between these application means, taking the weft son in sandwich.
  • the ribbons 20 are driven by the downstream part of the installation, at the same speed as the belts 9.
  • a cutting device 21 ( figures 2 and 4 ) is positioned on the top of the carousel, downstream of the incorporation of the adhesive tapes and is parallel to the machine axis.
  • This cutting device 21 is designed to continuously cut the sandwich of adhesive tapes and weft yarns in its middle, forming what are called two selvedges 22 formed of the half-weft ribbon sandwich ( figures 3 and 4 ).
  • the sandwich driven to the downstream part of the installation, passes under the cutting device where it is thus cut continuously.
  • the device is of the rotary knife 21a type, associated with a bearing surface 21b, but could take any other suitable form.
  • These guides or their rollers is adjustable, to optimize the maintenance of selvedges, and especially adjust the length of their trajectories between the cut and the end of the deployment. These lengths must be different to catch the spiral pitch so that the son of frames are perfectly perpendicular to the warp son. At the end of deployment, the two edges are stretched laterally, which generates a sheet of son of parallel frames.
  • the figure 3 also shows a device comprising two parallel rollers 26, placed substantially perpendicular to the machine axis, and downstream of the return rollers. It is understood that from upstream to downstream, the installation comprises, in the order: the rotating assembly 9, the carousel 10, the guides 23, 24, 25 and then the rollers 26. In the embodiment shown, the guides 25 are carried by the device of the figure 3 and their adjustment in position is made from this device.
  • rollers 27 for guiding the selvedges 22 between the rollers 26 and at each end thereof in order to allow the passage of the weft threads between the rollers.
  • rolls 27 for guiding the selvedges 22 between the rollers 26 and at each end thereof in order to allow the passage of the weft threads between the rollers.
  • Unrepresented ways of calling (or driving) the selvedges are provided upstream of the rollers 26 to allow the entrainment of selvedges and ribbons from their location in the vicinity of the carousel. We see at the figure 3 the selvedges 22 enter between the two rollers 26.
  • the installation can be configured to bring warp son following two plies between the rollers 26, between which the weft son are interposed during the passage between the rollers. It is also possible to bring a single ply of warp threads, above or below the weft ply.
  • Gluing is performed in a conventional gluing installation, not shown, located downstream of the device of the figure 3 .
  • the edges 22 may be separated from the grid formed by cutting or out of the gluing machine, before storage of the grid on a roll, or later.
  • the figure 4 shows the operation from a wire 28 for forming a frame.
  • This yarn is unwound from a spool 1, supported by the plate 4, then the set of guide-frames schematized at 29, and then deposited vertically on the carousel 10, in the form of a helical spiral through the combination of the rotational movement of the rotating assembly whose direction of rotation is represented by arrows and the linear displacement of the belts 11 in the direction of the other arrows located to the right of the carousel and right in the figure.
  • the wire defines on the surface of the carousel a generally tubular shape T.
  • figure 4 also shows the two unwinders 19 of ribbon 20, the circuit of these ribbons is schematically represented.
  • the cutting device 21 is also shown.

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  • 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)
  • Woven Fabrics (AREA)

Abstract

Le procédé de fabrication d'une grille textile comporte l'enroulement des fils sensiblement parallèlement sur un carrousel ayant une forme sensiblement cylindrique générée par les brins extérieurs de courroies sans fin (11) parallèles entre elles et à l'axe du carrousel et se déplaçant de manière synchrone, la prise en sandwich des fils déposés sur le carrousel entre deux rubans adhésifs, la découpe du sandwich en son milieu, générant deux lisières réunissant des brins de fil de trame, les lisières (22) sont progressivement éloignées l'une de l'autre jusqu'à ce que les fils de trame (28) se retrouvent sensiblement parallèles entre eux et dans un plan horizontal, ces fils de trame (28) étant ensuite placés au contact des fils de chaîne et les fils de trame, puis les fils de chaîne sont fixés à leurs points d'intersection. Installation correspondante.The method of manufacturing a textile grid comprises winding the wires substantially parallel to a carousel having a substantially cylindrical shape generated by the outer strands of endless belts (11) parallel to each other and to the carousel axis and moving synchronously, the sandwiching son laid on the carousel between two adhesive tapes, cutting the sandwich in the middle, generating two selvedges joining strands of weft yarn, the selvedges (22) are progressively removed one of the other until the weft threads (28) are substantially parallel to each other and in a horizontal plane, these weft threads (28) being then placed in contact with the warp threads and the weft threads, then the warp threads are attached to their points of intersection. Corresponding installation.

Description

L'invention concerne un procédé de fabrication de grille textile, une installation et des matériels y relatifs.The invention relates to a textile grid manufacturing method, an installation and related equipment.

La grille est un article textile constitué de fils de chaîne et de fils de trame, croisés à 90° (d'autres valeurs d'angle sont également possible) et fixés entre eux, généralement par collage. Une grille se caractérise par les types de fils utilisés en chaîne et en trame, par leur densité ou contexture (nombre de fils par centimètre en chaîne et en trame), et par le type de colle.The grid is a textile article consisting of warp threads and weft threads, crossed at 90 ° (other angle values are also possible) and fixed together, generally by gluing. A grid is characterized by the types of yarn used in warp and weft, by their density or texture (number of threads per centimeter in warp and weft), and by the type of glue.

La fabrication de grille est constituée des éléments suivants : déroulage des fils de chaîne, dépose des fils de trame perpendiculairement aux fils de chaîne, encollage, séchage, et enroulage. Différentes méthodes ont été développées pour déposer les fils de trame, par exemple à l'aide d'un bras tournant en continu avec une alimentation en fil de trame fixe, la dépose en continu en va et vient, avec alimentation fixe également, ou encore par injection des fils de trame.The grid manufacturing consists of the following elements: unwinding the warp threads, removing weft threads perpendicular to the warp threads, gluing, drying, and winding. Different methods have been developed for depositing the weft threads, for example by means of a continuously rotating arm with a fixed weft feed, the continuous deposition back and forth, with fixed feed also, or by injection of the weft son.

Le déroulage ou la dépose des fils de trame sur les fils de chaîne est le facteur limitant la cadence de production des grilles et un facteur de cassure des fils de trame. Par exemple, la dépose par un bras tournant génère des à-coups de vitesse lorsque le bras passe autour des éléments définissant les rives.The unwinding or removal of the weft threads on the warp threads is the factor limiting the rate of production of the grids and a breaking factor of the weft threads. For example, the removal by a rotating arm generates bursts of speed when the arm passes around the elements defining the banks.

Le FR 2 377 467 décrit un procédé et une installation de fabrication d'une grille textile dans lequel on enroule des fils de trame sensiblement parallèlement sur un sorte de carrousel ayant une forme sensiblement cylindrique générée par les brins extérieurs de courroies sans fin parallèles entre elles et à l'axe du carrousel et se déplaçant de manière réglable et synchrone avec la vitesse de rotation d'un bras d'alimentation en fil tournant autour du carrousel. Le système de dépose des fils est avantageusement à deux trames et comporte un bras tubulaire rotatif monté sur un arbre tournant, chaque trame étant alimentée à partir de supports fixes pouvant être équipés de réserves. Des éléments filiformes sont appliqués sur les fils de part et d'autres d'un axe de découpe, ces éléments étant ensuite utilisés pour écarter et mettre à plat les fils de trame coupés. Ce système n'est pas conçu pour une alimentation à partir d'une pluralité de bobines de fils de trame, et les éléments filiformes ne sont pas en mesure de garantir un maintien, une mise à plat et un guidage efficace et sûr des fils de trame découpés. Ces inconvénients ne permettent pas d'obtenir une cadence de production élevée et un réglage à volonté du pas des fils de trame découpés. De même, la longueur des fils de trame découpés est limitée.The FR 2,377,467 describes a method and an installation for manufacturing a textile grid in which we wind weft yarns substantially parallel to a kind of carousel having a substantially cylindrical shape generated by the outer strands of endless belts parallel to each other and to the axis of the carousel and moving in an adjustable manner and synchronous with the rotational speed of a wire feed arm rotating around the carousel. The son removal system is advantageously two fields and comprises a rotatable tubular arm mounted on a rotating shaft, each frame being fed from fixed supports that can be equipped with reserves. Wire-like elements are applied to the wires on either side of a cutting axis, which elements are then used to spread and flatten the cut weft son. This system is not designed for feeding from a plurality of weft yarn coils, and the filiform elements are not able to guarantee maintenance, flattening, and efficient and safe guidance of yarns. weft cut. These drawbacks do not make it possible to obtain a high production rate and an adjustment at will of the pitch of the cut weft threads. Likewise, the length of the cut weft threads is limited.

L'invention a pour objectif de fournir un procédé et une installation permettant de pallier les différents inconvénients de l'art antérieur et d'accélérer la cadence de production des grilles, depuis le déroulement des fils de trame jusqu'à l'assemblage de la grille.The object of the invention is to provide a method and an installation making it possible to overcome the various disadvantages of the prior art and to speed up the rate of production of the grids, from the unwinding of the weft threads to the assembly of the wire rack.

Un autre objectif de l'invention est de proposer un tel procédé et une telle installation permettant facilement de modifier la largeur de la laize de fils de trame.Another object of the invention is to propose such a method and such an installation making it easy to modify the width of the width of the weft son.

D'autres objectifs et avantages de l'invention ressortirons de ce qui suit.Other objects and advantages of the invention will become apparent from the following.

L'invention a ainsi pour objet un procédé de fabrication d'une grille textile formée de fils de chaîne et de fils de trame croisés fixés à leurs points d'intersection, procédé dans lequel

  • on enroule des fils de trame (destinés à former la trame d'une grille) sensiblement parallèlement sur un carrousel ayant une forme sensiblement cylindrique générée par les brins extérieurs de courroies sans fin parallèles entre elles et à l'axe du carrousel et se déplaçant de manière synchrone de telle manière que la surface extérieure de l'ensemble des courroies se déplace entre une extrémité d'entrée recevant les fils de trame et une extrémité de sortie de ces fils de trame à partir de laquelle les fils de trame sont éloignés du carrousel,
caractérisé en ce que,
  • les fils sont issus d'une pluralité de bobines de fils de trame,
  • entre deux brins extérieurs de deux courroies consécutives, appelées courroies génératrices, deux rubans, dont l'un au moins est adhésif, sont déposés en continu et en regard l'un de l'autre sur les faces extérieure et intérieure des fils au fur et à mesure de l'avance de ces fils sur la surface extérieure du carrousel ; les rubans prennent les fils de trame en sandwich,
  • le ruban est découpé en deux demi-rubans (lisières) dans la direction longitudinale et en continu, en un emplacement situé en amont de l'extrémité de sortie des fils de trame ; les brins de fils de trame s'étendent entre les lisières,
  • les demi-rubans sont progressivement éloignés l'un de l'autre jusqu'à ce que les fils de trame se retrouvent sensiblement parallèles entre eux et dans un plan horizontal,
  • ces fils de trame étant alors placés au contact des fils de chaîne et les fils de trame, puis les fils de chaîne sont fixés à leurs points d'intersection.
The subject of the invention is thus a method for manufacturing a textile grid formed of warp yarns and cross weft yarns fixed at their points of intersection, a method in which
  • we wind up weft yarns (intended to form the weft of a grid) substantially parallel to a carousel having a substantially cylindrical shape generated by the outer strands of endless belts parallel to each other and to the axis of the carousel and moving from synchronously so that the outer surface of the set of belts moves between an input end receiving the weft yarns and an exit end of these weft yarns from which the weft yarns are moved away from the carousel ,
characterized in that
  • the wires come from a plurality of weft son coils,
  • between two outer strands of two consecutive belts, called generator belts, two ribbons, at least one of which is adhesive, are deposited continuously and facing one another on the outer and inner faces of the yarns as and when as these wires advance on the outer surface of the carousel; the ribbons take the sandwich weft threads,
  • the ribbon is cut into two half-ribbons (selvedges) in the longitudinal and continuous direction at a location upstream of the exit end of the weft threads; the strands of weft threads extend between the selvedges,
  • the half-ribbons are progressively separated from each other until the weft threads are substantially parallel to one another and in a horizontal plane,
  • these weft son are then placed in contact with the warp son and the weft son, and the warp son are fixed at their points of intersection.

Les deux courroies génératrices sont disposées de préférence de part et d'autre et parallèlement à la génératrice supérieure ou inférieure, plus préférentiellement la supérieure, de la forme sensiblement cylindrique générée par le carrousel de courroies.The two generating belts are preferably arranged on either side and parallel to the upper or lower generatrix, more preferably the upper, of the substantially cylindrical shape generated by the carousel of belts.

Les rubans sont mus dans la même direction et à la même vitesse linéaire que les courroies. Notamment, ce sont les lisières formées par la découpe des rubans accolés qui sont entraînés et entrainent avec elles les rubans depuis leur dévideur.Ribbons are driven in the same direction and at the same linear speed as the belts. In particular, it is the selvedges formed by cutting contiguous ribbons that are driven and drag with them the ribbons from their reel.

On préfère que les deux rubans comportent une face adhésive chacun, car cela assure un bon maintien des fils de trame emprisonnés entre eux, quel que soit le titre du fil. On peut aussi utiliser un ruban adhésif et un ruban non-adhésif. Les rubans sont réalisés en un matériau leur conférant souplesse et résistance mécanique et au déchirement suffisantes pour leur mise en oeuvre dans l'invention, lorsque les rubans sont déroulés, guidés, accolés et après leur découpe en deux demi-rubans accolés, puis écartés et entraînés tout au long du procédé, tout en étant aisément découpables en leur milieu. On peut notamment utiliser un matériau polymère éventuellement renforcé, par exemple par des fils, un non-tissé ou un textile. De tels rubans sont disponibles de manière usuelle dans le commerce ou peuvent être élaborés spécialement, sans que cela ne dépasse les compétences normales de l'homme du métier. Le ruban est présenté en rouleaux, des rouleaux pouvant contenir typiquement 500 à 10 000 mètres de ruban. L'adhésif est d'une nature permettant de dérouler le ruban adhésif et d'adhérer suffisamment à l'autre ruban pour les besoin du procédé et les performances mécaniques susvisées. La largeur du ruban est aussi adaptée pour faciliter la découpe longitudinale et pour un bon maintien et guidage des lisières après découpe. Typiquement, cette largeur peut être comprise entre environ 0,5 et environ 5 cm, notamment entre environ 1 et environ 3 cm, par exemple environ 2 cm. La largeur des lisières permet en outre un meilleur contact et guidage au niveau des galets de renvoi, puis du dispositif d'application des fils de chaîne. Elle permet aussi de garantir ces fonctions pour des longueurs de trame découpée variées, en adéquation avec la possibilité de réglage du diamètre du carrousel. La structure plane des lisières favorise en outre la mise à plat et le maintien en tension dans le sens latéral des fils de trame en aval du carrousel, du fait notamment que les forces notamment de traction s'exercent alors sur toute la largeur de la lisière.It is preferred that the two ribbons comprise an adhesive face each, because this ensures a good maintenance of the weft son trapped between them, regardless of the title of the wire. You can also use an adhesive tape and a non-adhesive tape. The tapes are made of a material giving them flexibility and sufficient mechanical strength and tearing for their implementation in the invention, when the tapes are unwound, guided, contiguous and after cutting into two half-ribbons contiguous, then spaced and driven throughout the process, while being easily cut in the middle. In particular, it is possible to use an optionally reinforced polymeric material, for example by wires, a nonwoven or a textile. Such ribbons are commercially available in the usual manner or can be specially developed, without this exceeding the normal skills of those skilled in the art. The ribbon is presented in rolls, with rolls typically holding 500 to 10,000 meters of ribbon. The adhesive is of a nature to unroll the adhesive tape and to adhere sufficiently to the other tape for the needs of the process and the above mechanical performance. The width of the ribbon is also adapted to facilitate longitudinal cutting and for good maintenance and guidance selvedges after cutting. Typically, this width can be between about 0.5 and about 5 cm, especially between about 1 and about 3 cm, for example about 2 cm. The width of the selvedges further allows better contact and guidance at the return rollers, and the application device of the warp son. It also makes it possible to guarantee these functions for various cut frame lengths, in line with the possibility of adjusting the diameter of the carousel. The flat structure of the selvedges further promotes flattening and maintaining tension in the lateral direction of the weft yarns downstream of the carousel, in particular because the particular traction forces are then exerted over the entire width of the selvedge .

Pour la dépose continue des fils sur le carrousel, les fils peuvent être amenés en continu au contact du pourtour du carrousel par un mouvement de rotation relatif autour du carrousel. La dépose de tous les fils peut se faire sur le même plan perpendiculaire (plan de dépose) à l'axe du carrousel.For the continuous removal of the son on the carousel, the son can be brought continuously in contact with the perimeter of the carousel by a relative rotational movement around the carousel. The removal of all the son can be done on the same perpendicular plane (plane of removal) to the axis of the carousel.

De préférence, l'ensemble des bobines est lui-même en rotation relative autour d'un axe aligné sur l'axe du carrousel. De préférence, les fils sont déroulés en continu de cet ensemble de bobines en rotation, sont amenés au droit du plan de dépose sur le carrousel et déposés sur celui-ci par un même mouvement de révolution autour du plan de dépose. Suivant une caractéristique avantageuse, les fils sont déposés en continu suivant une spirale hélicoïdale grâce à l'avancement des courroies du carrousel.Preferably, the set of coils is itself in relative rotation about an axis aligned with the axis of the carousel. Preferably, the son are unrolled continuously from this set of coils in rotation, are brought to the right of the laying plane on the carousel and deposited on it by a same movement of revolution around the plane of deposit. According to an advantageous characteristic, the son are continuously deposited in a helical spiral through the advancement of the carousel belts.

On peut ajuster la vitesse linéaire des courroies (et des rubans) et/ou la vitesse de dépose des fils de trame sur le carrousel (c'est-à-dire la vitesse de révolution) en fonction du pas des fils de trame souhaité, et ce pas constitue le pas des fils de trame dans la grille finale. De même, le nombre de fils de trame déposés sur le carrousel permet de régler ce pas, et aussi la cadence de production pour une même circonférence de carrousel, cette cadence étant d'autant plus élevée que l'on dépose un nombre plus important de fils de trame. On peut jouer sur un ou plusieurs de ces facteurs pour ajuster la cadence de production pour une circonférence donnée de carrousel et donc pour une largeur ou laize de fils de trame donnée. On peut aussi jouer sur un ou plusieurs de ces facteurs selon la contexture souhaitée pour la grille.The linear speed of the belts (and ribbons) and / or the speed of removal of the weft yarns on the carousel (i.e. revolution speed) can be adjusted according to the pitch of the desired weft threads, and this step is the pitch of the weft threads in the final grid. Likewise, the number of weft yarns deposited on the carousel makes it possible to regulate this step, and also the rate of production for the same carousel circumference, this rate being even higher when a larger number of weft threads. One or more of these factors can be used to adjust the production rate for a given carousel circumference and thus for a given width or width of weft threads. You can also play on one or more of these factors depending on the desired contexture for the grid.

Suivant un mode de mise en oeuvre, on ajuste la circonférence du carrousel en faisant varier la distance de tout ou partie des courroies à l'axe du carrousel, et ce faisant on ajuste la largeur finale de la nappe de fils de trame. Suivant une modalité, on agit sur toutes les courroies sauf les deux courroies génératrices et éventuellement les deux courroies diamétralement opposées. Suivant une autre modalité, toutes les courroies sont déplaçables, y compris les courroies génératrices, et dans ce cas, si nécessaire, on replace les fils de trame déployés dans le plan horizontal correspondant au plan d'insertion au contact des, ou entre les fils de chaîne. La fixation des fils de chaîne et des fils de trame à leurs points d'intersection peut être réalisée par tout moyen connu, notamment collage ou soudage si la matière constituant les fils le permet. De préférence, la fixation est assurée par collage.According to one embodiment, the circumference of the carousel is adjusted by varying the distance of all or part of the belts to the axis of the carousel, and in doing so the final width of the sheet of weft threads is adjusted. According to one modality, one acts on all the belts except the two generating belts and possibly the two diametrically opposite belts. According to another modality, all the belts are movable, including the generating belts, and in this case, if necessary, we replace the weft son deployed in the horizontal plane corresponding to the insertion plane in contact with, or between the son of chain. Fixing the warp son and weft son at their intersection points can be achieved by any known means, including gluing or welding if the material constituting the son allows. Preferably, the attachment is provided by gluing.

Une fois l'obtention d'un réseau (nappe) de fils de trame parallèles mis à plat, on peut déposer le réseau sur des fils de chaîne, ou déposer des fils de chaîne sur lui, ou encore le déposer entre deux couches de fils de chaîne. Ensuite, on peut encoller, de préférence entre deux rouleaux d'encollage, puis sécher. On peut passer ensuite entre deux cylindres d'appel et/ou sur une enrouleuse (rouleau de stockage de la grille formée). Tout ceci peut se faire en continu, e.g. jusqu'à épuisement des bobines de fil de trame.Once a network (web) of parallel weft threads has been laid flat, the network can be deposited on warp threads, or warp threads deposited on it, or deposited between two layers of threads. of chain. Then, it is possible to glue, preferably between two gluing rolls, and then to dry. It can then pass between two call rolls and / or on a winder (storage roll of the grid formed). All this can be done continuously, e.g. until the weft yarns are exhausted.

Suivant un mode de mise en oeuvre, on emploie un carrousel comprenant entre 4 et 30, de préférence entre 12 et 20 courroies. Plus la laize que l'on veut produire doit avoir une largeur importante, plus le nombre de courroies doit être élevé afin de fournir un bon maintien aux fils de trame jusqu'à leur éloignement progressif du carrousel.According to one embodiment, a carousel comprising between 4 and 30, preferably between 12 and 20 belts, is used. The wider the width that one wants to produce must have a large width, the more the number of belts must be high in order to provide a good support to the weft threads until they are progressively removed from the carousel.

Le procédé n'est pas limité par le nombre de fils de trame (provenant de bobines différentes) que l'on dépose. Suivant un mode de mise en oeuvre, on enroule de 2 ou 3 à 200, de préférence de 10 à 30 fils de trame (provenant de bobines différentes) sur le carrousel.The method is not limited by the number of weft yarns (from different coils) that are deposited. According to one mode of implementation, one winds from 2 or 3 to 200, preferably from 10 to 30 weft yarns (from different reels) on the carousel.

La vitesse de rotation de dépose des fils sur le carrousel peut être notamment comprise entre 1 et 1000 tours par minute (tr/min), de préférence entre 50 et 500 tr/min. La vitesse linéaire des courroies peut notamment être comprise entre 1 et 100 m/min, de préférence entre 5 et 50 m/min.The rotation speed of removal of the son on the carousel can be in particular between 1 and 1000 revolutions per minute (rpm), preferably between 50 and 500 rpm. The linear speed of the belts may especially be between 1 and 100 m / min, preferably between 5 and 50 m / min.

Un autre objet de l'invention est une installation pour produire une grille textile formée de fils de chaîne et de fils de trame croisés et fixés à leurs points de croisement, comprenant, sur un même axe machine :

  • un carrousel de courroies ayant une forme sensiblement cylindrique générée par les brins extérieurs de courroies sans fin parallèles entre elles et à l'axe du carrousel et agencées de manière à pouvoir se déplacer de manière synchrone de telle manière que les brins extérieurs des courroies se déplacent entre une extrémité d'entrée et une extrémité de sortie du carrousel,
  • le moyen de distribution de fil de trame étant positionné à l'extérieur du carrousel par rapport à l'axe machine et sensiblement dans le plan diamétral coupant l'extrémité d'entrée sur le carrousel.
Another object of the invention is an installation for producing a textile grid formed of warp yarns and weft threads crossed and fixed at their crossing points, comprising, on the same machine axis:
  • a carousel of belts having a substantially cylindrical shape generated by the outer strands of endless belts parallel to each other and to the axis of the carousel and arranged so as to be able to move synchronously so that the outer strands of the belts move between an input end and an output end of the carousel,
  • the weft yarn dispensing means being positioned outside the carousel relative to the machine axis and substantially in the diametral plane intersecting the entrance end on the carousel.

L'installation peut comprendre un ensemble tournant portant au moins un moyen de réception de bobine destiné à recevoir une bobine de fil de trame et un moyen de distribution de fil de trame issu de la bobine.The installation may comprise a rotating assembly carrying at least one coil receiving means for receiving a weft yarn package and a weft yarn distribution means from the package.

Le carrousel peut être aligné sur l'axe de l'ensemble tournant (axe machine). Il peut être monté immobile en rotation sur cet axe. La rotation de l'ensemble tournant et l'avance des courroies permet la dépose successive de fils de trame régulièrement espacés à la surface du carrousel. Les fils se déposent en spirale hélicoïdale. La circonférence du carrousel détermine la largeur de la laize de fils de trame. Suivant une modalité avantageuse, le carrousel comporte des moyens de réglage de la distance de tout ou partie des courroies par rapport à l'axe machine. Ceci permet donc de faire varier la circonférence du carrousel et donc la largeur de la laize de fils de trame.The carousel can be aligned with the axis of the rotating assembly (machine axis). It can be mounted motionless on this axis. The rotation of the rotating assembly and the advance of the belts allows the successive removal of evenly spaced weft threads on the surface of the carousel. The wires are deposited in a helical spiral. The circumference of the carousel determines the width of the weft of weft yarns. According to an advantageous modality, the carousel comprises means for adjusting the distance of all or part of the belts with respect to the machine axis. This therefore makes it possible to vary the circumference of the carousel and therefore the width of the width of the weft threads.

Dans un mode de réalisation, le carrousel peut comporter, à ses deux extrémités, deux plateaux, avantageusement circulaires, comportant des moyens de déploiement synchrone des courroies permettant de faire varier la circonférence du carrousel. Les courroies peuvent notamment être portées par des guides, les plateaux peuvent être munis de rainures ou de glissières s'étendant depuis une position proche du centre du plateau jusqu'à une position éloignée, les guides peuvent être insérés dans ces rainures ou glissières, et elles peuvent être déplacés de manière synchrone entre une position définissant une circonférence minimum du carrousel et une position définissant une circonférence maximum du carrousel, et être immobilisées dans la position souhaitée par un moyen de serrage ou de blocage adapté.In one embodiment, the carousel may comprise, at its two ends, two trays, advantageously circular, comprising synchronous deployment means of the belts for varying the circumference of the carousel. The belts may in particular be carried by guides, the trays may be provided with grooves or slides extending from a position near the center of the plate to a remote position, the guides may be inserted into these grooves or slides, and they can be moved synchronously between a position defining a minimum circumference of the carousel and a position defining a maximum circumference of the carousel, and be immobilized in the desired position by a suitable clamping or locking means.

Le carrousel pourra comporter autant de courroies que nécessaire pour permettre de conférer une assise et un guidage adapté des fils de trame en fonction de la circonférence du carrousel. L'homme du métier comprendra également que la largeur des courroies et donc l'assise que chacune peut procurer peut varier. Typiquement, le carrousel peut comporter entre 4 et 30, de préférence entre 12 et 20 courroies. Typiquement, les courroies peuvent être plates ou avoir une section sensiblement circulaire. Il s'agit de préférence de courroies plates, pouvant avoir par exemple une largeur comprise entre environ 10 et environ 50 mm. 2 courroies dites génératrices sont placées de préférence parallèlement et de part et d'autre de la génératrice supérieure ou inférieure, de préférence supérieure de la forme cylindrique du carrousel. Les courroies peuvent être réalisées en tout matériau et avoir toute structure, renforcée ou non, dentée ou non, classique. On peut par exemple utiliser des courroies dentées en polyuréthane renforcé.The carousel may include as many belts as necessary to provide a seat and a guide adapted to the weft son according to the circumference of the carousel. Those skilled in the art will also understand that the width of the belts and therefore the seating that each can provide may vary. Typically, the carousel may have between 4 and 30, preferably between 12 and 20 belts. Typically, the belts may be flat or have a substantially circular section. It is preferably flat belts, which may have for example a width of between about 10 and about 50 mm. 2 so-called generator belts are preferably placed parallel and on either side of the upper or lower generatrix, preferably upper of the cylindrical shape of the carousel. The belts can be made of any material and have any structure, reinforced or not, toothed or not, conventional. For example, reinforced polyurethane timing belts can be used.

L'installation peut comporter, à proximité du carrousel, deux dérouleurs de bobines de rubans, rubans dont l'un au moins est adhésif, des premiers moyens de guidage de ruban depuis l'un de ces dérouleurs, ces premiers moyens étant agencés de manière à pouvoir amener, notamment en passant par l'extrémité de sortie du carrousel, un premier ruban à l'intérieur du carrousel, entre les deux brins extérieurs des deux courroies génératrices et parallèlement à l'axe machine, et des deuxièmes moyens de guidage de ruban depuis l'autre de ces dérouleurs, ces deuxièmes moyens étant agencés de manière à pouvoir amener un deuxième ruban à l'extérieur du carrousel, entre les deux brins extérieurs des courroies génératrices et parallèlement à l'axe machine. L'installation peut comporter en outre des moyens d'application, notamment roulettes ou galets, agencés de manière à pouvoir appliquer les deux rubans l'un contre l'autre au fur et à mesure de leur passage entre ces moyens d'application. Les rubans prennent les fils en sandwich sur toute la largeur des rubans. Des moyens d'entraînement de rubans peuvent être agencés de manière à pouvoir entraîner les rubans, à la vitesse de déplacement des courroies du carrousel, depuis leur dérouleur et à travers les moyens d'application, puis d'un dispositif de coupe parallèle à l'axe machine disposé en aval des moyens d'application entre les deux brins extérieurs des courroies génératrices. Le dispositif de coupe sépare les deux rubans accolés en leur milieu, donnant deux lisières formées de deux demi-rubans accolés (prenant les fils de trame en sandwich). Les moyens d'entraînement de rubans agissent de préférence sur ces lisières qui tirent les rubans depuis leurs dérouleurs.The installation may comprise, near the carousel, two tape reel unwinders, ribbons at least one of which is adhesive, first ribbon guide means from one of these unwinders, these first means being arranged in a manner to be able to bring, in particular passing through the exit end of the carousel, a first ribbon inside the carousel, between the two outer strands of the two generating belts and parallel to the machine axis, and second guide means of ribbon from the other of these unwinders, these second means being arranged so as to bring a second ribbon outside the carousel, between the two outer strands of the generator belts and parallel to the machine axis. The installation may further comprise application means, including wheels or rollers, arranged so as to be able to apply the two ribbons against each other as and when they pass between these application means. The ribbons take the threads sandwiched across the full width of the ribbons. Ribbon drive means may be arranged so as to be able to drive the ribbons, at the speed of movement of the carousel belts, from their unwinder and through the application means, and then to a parallel cutting device. machine axis disposed downstream of the application means between the two outer strands of the generating belts. The cutting device separates the two contiguous ribbons in their middle, giving two selvedges formed of two half-ribbons contiguous (taking the weft son sandwich). The tape drive means preferably act on these selvedges that pull the ribbons from their unwinders.

Suivant un mode de réalisation, les deux courroies génératrices, situées de préférence à la partie supérieure du carrousel, définissent entre elles l'espace dans lequel les rubans circulent, sont accolés, puis découpés en leur milieu. Le dispositif de coupe peut comprendre un couteau circulaire et éventuellement une surface d'appui, par exemple.According to one embodiment, the two generating belts, preferably located at the top of the carousel, define between them the space in which the ribbons circulate, are contiguous and then cut in their middle. The cutting device may comprise a circular knife and possibly a bearing surface, for example.

Il n'est pas nécessaire que toutes les courroies soient déplaçables pour le réglage de la circonférence du carrousel. Il est notamment plus facile de conserver les deux courroies génératrices et éventuellement leur(s) courroie(s) opposée(s) fixes. On peut aussi les rendre déplaçables.It is not necessary for all belts to be movable to adjust the circumference of the carousel. In particular, it is easier to keep the two generating belts and possibly their opposite fixed belt (s). We can also make them movable.

L'installation peut comporter deux moyens de renvoi disposés en aval et à distance du carrousel, de préférence sur un plan horizontal et à une distance l'un de l'autre sensiblement égale à la circonférence du carrousel. Ces deux moyens de renvoi, munis notamment de galets de renvoi ou analogues, reçoivent les lisières. L'écartement des galets de renvoi peut être avantageusement réglable pour s'adapter au réglage de la circonférence du carrousel. Lorsque les lisières sont passées par ces galets de renvoi, elles peuvent être maintenues parallèles, et la nappe de fils de trame est donc étalée sensiblement à plat.The installation may comprise two return means arranged downstream and away from the carousel, preferably on a horizontal plane and at a distance from each other substantially equal to the circumference of the carousel. These two return means, provided in particular with return rollers or the like, receive the selvedges. The spacing of the return rollers can be advantageously adjustable to accommodate the setting of the circumference of the carousel. When the edges are passed by these return rollers, they can be kept parallel, and the web of weft son is spread out substantially flat.

L'ensemble tournant peut comporter un nombre variable de moyens de réception de bobine. Il peut notamment en comporter de 2 à 200, de préférence de 10 à 30.The rotating assembly may comprise a variable number of coil receiving means. It may in particular comprise from 2 to 200, preferably from 10 to 30.

Le moyen de distribution de fil de trame peut comporter une couronne de distribution de trames. Il peut aussi comporter des guides-trame agencés de manière à guider les fils issus des bobines vers la surface du carrousel, sur le plan de dépose des fils. De préférence, il comporte autant de guides-trame que l'ensemble tournant compte de moyens de réception de bobine. Des guides-trame sont avantageusement répartis régulièrement sur la couronne de distribution. L'installation peut aussi comporter des guides-trame en amont de la couronne de distribution. Certains au moins des ces guide-trames peuvent avantageusement servir à mettre les fils en tension.The weft distribution means may comprise a frame distribution ring. It may also comprise weft guides arranged so as to guide the son coming from the coils towards the surface of the carousel, on the son removal plan. Preferably, it comprises as many frame guides as the assembly turning account of coil receiving means. Weft guides are advantageously regularly distributed on the distribution ring. The installation may also include frame guides upstream of the distribution ring. At least some of these frameguides can advantageously be used to put the son in tension.

L'installation peut comporter en outre un dispositif permettant de placer la nappe ou le réseau de fils de trame au contact d'une ou deux nappes de fils de chaîne. Dans un mode de réalisation, ce dispositif peut comporter deux rouleaux parallèles, placés sensiblement perpendiculairement à l'axe machine, et en aval des galets de renvoi. L'un au moins des rouleaux peut être mobile, permettant de régler un entrefer. L'installation peut comporter des moyens d'amenée de fils de chaîne suivant l'axe machine, entre ces rouleaux. Elle peut comporter aussi des moyens de guidage des lisières entre les rouleaux et à chaque extrémité de ceux-ci de manière à permettre l'introduction et l'entraînement des fils de trame entre les rouleaux. L'installation peut être configurée pour amener des fils de chaîne suivant deux nappes, entre lesquelles les fils de trame sont interposés lors du passage entre les rouleaux. Elle peut aussi être configurée pour amener des fils de chaîne suivant une nappe. En aval de ce dispositif, l'installation peut comporter un ensemble d'encollage connu en soi, permettant de fixer ces nappes entre elles à leurs points de croisement. On peut ainsi utiliser des rouleaux encolleurs avec des moyens permettant d'appliquer une pression ajustable.The installation may further comprise a device for placing the web or the network of weft son in contact with one or two layers of warp son. In one embodiment, this device may comprise two parallel rollers, placed substantially perpendicular to the machine axis, and downstream of the return rollers. At least one of the rollers can be mobile, to adjust an air gap. The installation may comprise means for feeding warp threads along the machine axis between these rollers. It may also include means for guiding the selvedges between the rollers and at each end thereof so as to allow insertion and entrainment of the weft son between the rollers. The installation can be configured to bringing warp threads following two plies, between which the weft son are interposed during the passage between the rollers. It can also be configured to bring warp threads following a web. Downstream of this device, the installation may comprise a set of sizing known per se, for fixing these sheets together at their crossing points. It is thus possible to use glue rollers with means for applying an adjustable pressure.

L'ensemble tournant peut être entraîné en rotation par un moteur dont la vitesse de rotation est de préférence réglable. La vitesse de rotation peut être notamment comprise entre 1 et 1000 tours par minute (tr/min), de préférence entre 50 et 500 tr/min. L'installation peut comporter aussi des moyens motorisés pour entraîner d'une part les courroies du carrousel et les lisières et rubans, à une vitesse synchrone. La vitesse linéaire des courroies et des lisières peut notamment être comprise entre 1 et 100 m/min, de préférence entre 5 et 50 m/min.The rotating assembly can be rotated by a motor whose rotation speed is preferably adjustable. The rotational speed can be in particular between 1 and 1000 revolutions per minute (rpm), preferably between 50 and 500 rpm. The installation may also comprise motorized means for driving on the one hand the carousel belts and selvedges and ribbons, at a synchronous speed. The linear speed of the belts and selvedges may especially be between 1 and 100 m / min, preferably between 5 and 50 m / min.

Le carrousel de courroies qui a été décrit dans le cadre de l'installation est aussi un objet de l'invention. Il peut comporter au moins 4, de préférence au moins 12 courroies sans fin réparties régulièrement autour et parallèlement à un axe central, ces courroies s'étendant chacune entre deux roues situées dans un plan parallèle à l'axe central et l'ensemble des brins extérieurs des courroies générant une forme sensiblement cylindrique. Les courroies sont susceptibles d'être mises en mouvement de manière synchrone et dans la même direction avec les brins extérieurs se déplaçant d'un plan de départ perpendiculaire à l'axe à un plan d'arrivée perpendiculaire à l'axe. Le carrousel peut comprendre en outre des moyens d'amenée de ruban disposés sous la face inférieure de deux courroies voisines, agencés de manière à pouvoir faire circuler un ruban entre les deux brins extérieurs des deux courroies et sensiblement dans le plan de ces brins. Ces courroies sont dites génératrices, elles sont placées de préférence parallèlement et de part et d'autre de la génératrice supérieure ou inférieure, de préférence supérieure, de la forme cylindrique du carrousel. Les autres caractéristiques du carrousel et de ses éléments constitutifs données ci-dessus s'appliquent à cet objet.The carousel of belts that has been described in connection with the installation is also an object of the invention. It may comprise at least 4, preferably at least 12 endless belts regularly distributed around and parallel to a central axis, these belts each extending between two wheels located in a plane parallel to the central axis and all the strands. external belts generating a substantially cylindrical shape. The belts are capable of being moved synchronously and in the same direction with the outer strands moving from a starting plane perpendicular to the axis to a plane of arrival perpendicular to the axis. The carousel may further comprise ribbon feeding means arranged under the lower face of two adjacent belts, arranged so as to circulate a ribbon between the two outer strands of the two belts and substantially in the plane of these strands. These belts are called generatrices, they are placed preferably parallel and on either side of the upper or lower generatrix, preferably higher, of the cylindrical shape of the carousel. The other characteristics of the carousel and its constituent elements given above apply to this object.

L'invention va être maintenant décrite plus en détail à l'aide d'un exemple d'installation non limitatif et se référant aux figures suivantes :

  • la figure 1 est une vue schématique en élévation d'un ensemble tournant ;
  • la figure 2 est une vue schématique en élévation d'un carrousel ;
  • la figure 3 est une vue schématique en élévation d'un dispositif de déploiement des lisières ; et
  • la figure 4 est un schéma de principe de fonctionnement.
The invention will now be described in more detail with the aid of a non-limiting installation example and referring to the following figures:
  • the figure 1 is a schematic elevational view of a rotating assembly;
  • the figure 2 is a schematic elevational view of a carousel;
  • the figure 3 is a schematic elevational view of a selvedge deployment device; and
  • the figure 4 is a functional block diagram.

La figure 1 illustre un ensemble tournant, dénommé « turbine », dans lequel les bobines 1 de trames sont embarquées. Le nombre de bobines de trames peut varier, l'ensemble présenté étant prévu pour dix-huit trames. La turbine est dans ce cas constituée de deux plateaux 2 portant neuf broches 3 chacun (broches à expansion permettant un maintien précis des bobines), et d'un ensemble de distribution des trames formé d'un plateau 4, d'une couronne 5 de distribution des trames, la couronne 5 étant reliée au plateau 4 par dix-huit tiges 6 disposées tous les 20° et portant des guide-trames 7. Le plateau 4 et la couronne 5 comportent des orifices 8 formant guide-trame répartis tous les 20° également. Les guides-trame 7 et 8 sont agencés de manière à permettre le guidage d'un fil. Les guides-trame 7 ont en plus pour fonction de tendre le fil. Les plateaux 2 et 4 sont solidaires, fixés sur un fût tournant 6 motorisé. L'ensemble tournant est désigné dans son ensemble par la référence numérique 9.The figure 1 illustrates a rotating assembly, referred to as "turbine", in which the coils 1 of frames are embedded. The number of field coils can vary, the set being provided for eighteen frames. In this case, the turbine consists of two plates 2 carrying nine pins 3 each (expansion pins allowing accurate retention of the coils), and a frame distribution assembly consisting of a plate 4, a crown 5 of distribution of the frames, the ring 5 being connected to the plate 4 by eighteen rods 6 arranged every 20 ° and carrying the frame guides 7. The plate 4 and the ring 5 comprise orifices 8 forming a weft guide distributed every 20 ° also. The frame guides 7 and 8 are arranged to allow the guiding of a wire. The raster guides 7 have the additional function of straining the wire. Trays 2 and 4 are integral, fixed on a rotating shaft 6 motorized. The rotating assembly is designated as a whole by reference numeral 9.

La figure 2 montre un carrousel 10 constitué de douze courroies 11. Les courroies 11 sont réparties autour d'un axe central de façon que l'ensemble de leurs brins extérieurs représente une forme sensiblement tubulaire, à douze faces, comparable à un cylindre. Les courroies 11 s'étendent toutes depuis un même plan perpendiculaire à l'axe du carrousel, défini par convention comme plan amont, et situé au voisinage d'une première extrémité dite d'entrée du carrousel. A l'exception des deux courroies génératrices (celles situées à la partie supérieure du carrousel), les courroies s'étendent toutes jusqu'à un deuxième plan perpendiculaire à l'axe du carrousel, défini comme plan aval, et situé au voisinage de l'autre extrémité, dite de sortie, du carrousel 10. Les courroies 11 génératrices sont plus courtes et s'étendent jusqu'à un troisième plan perpendiculaire à l'axe du carrousel 10, défini comme plan intermédiaire. Le sens de rotation des courroies fait que leurs brins extérieurs se déplacent depuis le plan amont en direction du plan aval ou du plan intermédiaire, selon les cas.The figure 2 shows a carousel 10 consisting of twelve belts 11. The belts 11 are distributed around a central axis so that all of their outer strands is a substantially tubular shape, twelve faces, comparable to a cylinder. The belts 11 all extend from the same plane perpendicular to the axis of the carousel, conventionally defined as the upstream plane, and located in the vicinity of a first so-called entrance end of the carousel. With the exception of the two generating belts (those located at the top of the carousel), the belts all extend to a second plane perpendicular to the carousel axis, defined as a downstream plane, and located in the vicinity of the carousel. other end, said output of the carousel 10. The belts 11 generators are shorter and extend to a third plane perpendicular to the axis of the carousel 10, defined as an intermediate plane. The direction of rotation of the belts causes their outer strands to move from the upstream plane towards the downstream plane or the intermediate plane, as the case may be.

Des dispositifs de réglage des positions des courroies permettent d'ajuster la valeur du diamètre de ce tube, et donc d'ajuster sa circonférence. Les roues 12 des courroies 11 sont montées deux par deux sur des axes communs, formant chaque fois un chariot 13 (six chariots pour les six paires de courroies). Les chariots comportent à chacune de leurs extrémités un guide 14. Le carrousel comporte un arbre médian 15 portant au voisinage de ses deux extrémités, un plateau circulaire 16. Ces plateaux 16 comportent des rainures 17 s'étendant depuis une position proche de l'arbre 15 à une position proche du bord extérieur du plateau 16. Les guides 14 de quatre des chariots 13 sont retenus dans les rainures 17, le déplacement conjoint de ces guides 14 et des chariots 13 correspondants permettant de faire varier la circonférence du carrousel 10. Le réglage est vérouillé par un moyen adapté, figuré par une vis de blocage 18. Dans le mode de réalisation représenté, les deux chariots supérieur et inférieur sont fixes, ce qui explique que les disques ne comportent que quatre rainures. Le carrousel comporte aussi des moyens, non visibles, d'entraînement synchrone des courroies.Belt position adjusting devices make it possible to adjust the value of the diameter of this tube, and thus to adjust its circumference. The wheels 12 of the belts 11 are mounted in pairs on common axes, each forming a carriage 13 (six carriages for the six pairs of belts). The carriages comprise at each of their ends a guide 14. The carousel comprises a median shaft 15 carrying in the vicinity of its two ends, a circular plate 16. These plates 16 comprise grooves 17 extending from a position close to the shaft 15 at a position close to the outer edge of the plate 16. The guides 14 of four of the carriages 13 are retained in the grooves 17, the joint displacement of these guides 14 and corresponding carriages 13 for varying the circumference of the carousel 10. adjustment is locked by a suitable means, represented by a locking screw 18. In the embodiment shown, the two upper and lower carriages are fixed, which explains that the discs have only four grooves. The carousel also comprises means, not visible, synchronous drive belts.

En usage, le carrousel 10 est aligné dans l'axe de l'ensemble tournant 9 et disposé en partie à l'interieur de la couronne 5 de distribution des trames de telle manière que cette couronne soit disposée sensiblement au droit du plan amont. Les mouvements coordonnés de rotation de l'ensemble tournant 9 et d'avance des courroies 11 génèrent un enroulement régulier et continu des dix-huit trames sur le carrousel 10, sous forme de dix-huit spirales hélicoidales parallèlles avançant selon l'axe machine à la vitesse des courroies 11. Le pas des spirales est égal au rapport entre la vitesse linéaire des courroies 11 et la vitesse de rotation de l'ensemble tournant 9.In use, the carousel 10 is aligned in the axis of the rotating assembly 9 and disposed partly inside the ring 5 of distribution of the frames such that this ring is disposed substantially in line with the upstream plane. The coordinated rotational movements of the rotating assembly 9 and the advance of the belts 11 generate a regular and continuous winding of the eighteen frames on the carousel 10, in the form of eighteen parallel helical spirals advancing along the machine axis. the speed of the belts 11. The pitch of the spirals is equal to the ratio between the linear speed of the belts 11 and the speed of rotation of the rotating assembly 9.

Deux dérouleurs 19 de ruban adhésif 20 sont positionnés à chaque extrémité du carrousel 10 et déportés par rapport à l'axe machine du carrousel (figure 4). Des éléments de guidage des rubans adhésifs permettent le passage d'un ruban à l'intérieur du carrousel, l'autre arrive par le dessus. Les deux rubans 20 sont appliqués l'un contre l'autre sur le dessus du carrousel entre les deux courroies supérieures dites génératrices, et prennent en sandwich les fils de trames, selon une génératrice. L'installation comporte des moyens d'application, non représentés, notamment roulettes ou galets, agencés de manière à pouvoir appliquer les deux rubans l'un contre l'autre au fur et à mesure de leur passage entre ces moyens d'application, en prenant les fils de trame en sandwich. Les rubans 20 sont entraînés par la partie aval de l'installation, à la même vitesse que les courroies 9.Two unwinders 19 of adhesive tape 20 are positioned at each end of the carousel 10 and offset with respect to the machine axis of the carousel ( figure 4 ). Guide elements of the adhesive tapes allow the passage of a ribbon inside the carousel, the other arrives from above. The two ribbons 20 are applied against each other on the top of the carousel between the two upper belts said generators, and sandwich the son of frames, according to a generator. The installation comprises application means, not shown, in particular rollers or rollers, arranged so as to be able to apply the two ribbons against each other as they pass between these application means, taking the weft son in sandwich. The ribbons 20 are driven by the downstream part of the installation, at the same speed as the belts 9.

Un dispositif de coupe 21 (figures 2 et 4) est positionné sur le dessus du carrousel, en aval de l'incorporation des rubans adhésifs et est parallèle à l'axe machine. Ce dispositif de coupe 21 est conçu pour couper en continu le sandwich de rubans adhésifs et de fils de trame en son milieu, formant ce que l'on appelle deux lisières 22 formées du demi-sandwich ruban-fils de trame (figures 3 et 4). Le sandwich, entraîné vers la partie aval de l'installation, passe sous le dispositif de coupe où il est ainsi découpé en continu. Le dispositif est du type couteau rotatif 21 a, associé à une surface d'appui 21 b, mais pourrait prendre toute autre forme adaptée.A cutting device 21 ( figures 2 and 4 ) is positioned on the top of the carousel, downstream of the incorporation of the adhesive tapes and is parallel to the machine axis. This cutting device 21 is designed to continuously cut the sandwich of adhesive tapes and weft yarns in its middle, forming what are called two selvedges 22 formed of the half-weft ribbon sandwich ( figures 3 and 4 ). The sandwich, driven to the downstream part of the installation, passes under the cutting device where it is thus cut continuously. The device is of the rotary knife 21a type, associated with a bearing surface 21b, but could take any other suitable form.

A la figure 3, on voit un ensemble de guidage et déploiement des lisières 22, constitué de plusieurs galets de renvoi et maintien des lisières, permettant de les écarter depuis l'axe machine (où ils sont coupés) jusqu'aux bords de la machine (un à droite l'autre à gauche) et au-delà, leur écartement final correspondant à la laize du produit fini, et est égal à la circonférence du carrousel. On trouve, positionné un peu en aval du dispositif de coupe 21 mais à un emplacement situé au droit du carrousel 10, un premier guide 23 muni de deux galets 23a de renvoi, à partir duquel les deux lisières 22 vont être progressivement écartées. Pendant cette première phase, les fils de trame sont encore en contact avec le carrousel 10, et ce contact s'amenuise à mesure de l'écartement des lisières après passage par le guide 23.To the figure 3 , we see a set of guide and deployment of selvedges 22, consisting of several return rollers and maintaining selvedges, to separate them from the machine axis (where they are cut) to the edges of the machine (one on the right the other on the left) and beyond, their final spacing corresponding to the width of the finished product, and is equal to the circumference of the carousel. We find, positioned a little downstream of cutting device 21 but at a location located at the right of the carousel 10, a first guide 23 provided with two rollers 23a return, from which the two edges 22 will be gradually separated. During this first phase, the weft threads are still in contact with the carousel 10, and this contact decreases as the spacing of the selvedges after passing through the guide 23.

On trouve ensuite deux autres guides 24 avec galets 24a de renvoi situés sur un même plan horizontal et définissant un écartement correspondant à un déploiement intermédiaire de la nappe de trame, puis deux autres guides 25 avec galets 25a de renvoi définissant l'écartement correspondant à l'étalement à plat de la nappe. Dans l'installation, ces guides 24 et 25 sont situés à l'écart du carrousel, et en aval de celui-ci. Les fils de trame ne sont pas encore visibles ou représentés à la figure 3. On peut néanmoins facilement les imaginer, ils sont libérés du carrousel 10, et pendent souplement entre les deux lisières 22 jusqu'à être mis à plat au sortir des guides 25.Then there are two other guides 24 with return rollers 24a located on the same horizontal plane and defining a spacing corresponding to an intermediate deployment of the weft web, and two other guides 25 with rollers 25a deflection defining the spacing corresponding to 1 flat spreading of the web. In the installation, these guides 24 and 25 are located away from the carousel, and downstream thereof. The weft threads are not yet visible or represented at the figure 3 . However, we can easily imagine, they are released from the carousel 10, and hang loosely between the two selvedges 22 to be laid out of the guides 25.

La position de ces guides ou de leurs galets est réglable, pour optimiser le maintien des lisières, et surtout ajuster la longueur de leurs trajectoires entre la coupe et la fin du déploiement. Ces longueurs devront être différentes pour rattraper le pas des spirales afin que les fils de trames soient parfaitement perpendiculaires aux fils de chaîne. En fin de déploiement, les deux lisières sont tendues latéralement, ce qui génère une nappe de fils de trames parallèles.The position of these guides or their rollers is adjustable, to optimize the maintenance of selvedges, and especially adjust the length of their trajectories between the cut and the end of the deployment. These lengths must be different to catch the spiral pitch so that the son of frames are perfectly perpendicular to the warp son. At the end of deployment, the two edges are stretched laterally, which generates a sheet of son of parallel frames.

La figure 3 montre aussi un dispositif comportant deux rouleaux 26 parallèles, placés sensiblement perpendiculairement à l'axe machine, et en aval des galets de renvoi. On comprend que d'amont en aval, l'installation comporte, dans l'ordre : l'ensemble tournant 9, le carrousel 10, les guides 23, 24, 25, puis les rouleaux 26. Dans le mode de réalisation représenté, les guides 25 sont portés par le dispositif de la figure 3 et leur réglage en position est réalisé à partir de ce dispositif.The figure 3 also shows a device comprising two parallel rollers 26, placed substantially perpendicular to the machine axis, and downstream of the return rollers. It is understood that from upstream to downstream, the installation comprises, in the order: the rotating assembly 9, the carousel 10, the guides 23, 24, 25 and then the rollers 26. In the embodiment shown, the guides 25 are carried by the device of the figure 3 and their adjustment in position is made from this device.

Au voisinage des extrémités des rouleaux 26 et en amont et en aval suivant l'axe machine, il est prévu des moyens (galets) 27 de guidage des lisières 22 entre les rouleaux 26 et à chaque extrémité de ceux-ci de manière à permettre le passage des fils de trame entre les rouleaux. Des moyens non représentés d'appel (ou d'entraînement) des lisières sont prévus en amont des rouleaux 26 pour permettre l'entraînement des lisières et des rubans depuis leur emplacement au voisinage du carrousel. On voit à la figure 3 les lisières 22 entrer entre les deux rouleaux 26.In the vicinity of the ends of the rollers 26 and upstream and downstream along the machine axis, there are provided means (rollers) 27 for guiding the selvedges 22 between the rollers 26 and at each end thereof in order to allow the passage of the weft threads between the rollers. Unrepresented ways of calling (or driving) the selvedges are provided upstream of the rollers 26 to allow the entrainment of selvedges and ribbons from their location in the vicinity of the carousel. We see at the figure 3 the selvedges 22 enter between the two rollers 26.

L'installation peut être configurée pour amener des fils de chaîne suivant deux nappes entre les rouleaux 26, entre lesquelles les fils de trame sont interposés lors du passage entre les rouleaux. Il est également possible d'amener une seule nappe de fils de chaîne, au-dessus ou en dessous de la nappe de fils de trame.The installation can be configured to bring warp son following two plies between the rollers 26, between which the weft son are interposed during the passage between the rollers. It is also possible to bring a single ply of warp threads, above or below the weft ply.

L'encollage est effectué dans une installation d'encollage classique, non représentée, située en aval du dispositif de la figure 3.Gluing is performed in a conventional gluing installation, not shown, located downstream of the device of the figure 3 .

Les lisières 22 pourront être séparées de la grille formée par découpe soit au sortir de l'encolleuse, avant stockage de la grille sur un rouleau, soit ultérieurement.The edges 22 may be separated from the grid formed by cutting or out of the gluing machine, before storage of the grid on a roll, or later.

La figure 4 montre le fonctionnement à partir d'un fil 28 destiné à former une trame. Ce fil est déroulé depuis une bobine 1, pris en charge par le plateau 4, puis l'ensemble des guides-trame schématisé en 29, puis déposé à la verticale sur le carrousel 10, sous la forme d'une spirale hélicoïdale grâce à la combinaison du mouvement de rotation de l'ensemble tournant dont le sens de rotation est figuré par des flèches et le déplacement linéaire des courroies 11 dans le sens des autres flèches situées au droit du carrousel et à droite sur la figure. Le fil définit à la surface du carrousel une forme globalement tubulaire T. La figure 4 montre aussi les deux dérouleurs 19 de ruban 20, le circuit de ces rubans y est schématiquement représenté. On y voit aussi le dispositif de découpe 21. On se représente très facilement le fait que les deux rubans sont déposés, puis le sandwich découpé en son milieu en 21, que les lisières 22 ainsi formées sont amenées sensiblement parallèles jusqu'au guide 23 (la référence 30 est utilisée à la figure 4 pour montrer le point de déploiement généré par ledit guide) à partir duquel les lisières vont être progressivement éloignées l'une de l'autre et déployées, jusqu'à donner aux fils de trame la forme plane P.The figure 4 shows the operation from a wire 28 for forming a frame. This yarn is unwound from a spool 1, supported by the plate 4, then the set of guide-frames schematized at 29, and then deposited vertically on the carousel 10, in the form of a helical spiral through the combination of the rotational movement of the rotating assembly whose direction of rotation is represented by arrows and the linear displacement of the belts 11 in the direction of the other arrows located to the right of the carousel and right in the figure. The wire defines on the surface of the carousel a generally tubular shape T. figure 4 also shows the two unwinders 19 of ribbon 20, the circuit of these ribbons is schematically represented. The cutting device 21 is also shown. It is very easy to see that the two ribbons are deposited, then the sandwich cut in the middle at 21, that the selvedges 22 thus formed are brought substantially parallel to the guide 23 (FIG. the reference 30 is used at the figure 4 to show the deployment point generated by said guide) from which the selvedges will be progressively separated from each other and deployed, to give the weft son the flat form P.

Claims (15)

Procédé de fabrication d'une grille textile formée de fils de chaîne et de fils de trame croisés fixés à leurs points d'intersection, procédé dans lequel - on enroule des fils de trame sensiblement parallèlement sur un carrousel (10) ayant une forme sensiblement cylindrique générée par les brins extérieurs de courroies sans fin (11) parallèles entre elles et à l'axe du carrousel et se déplaçant de manière synchrone de telle manière que la surface extérieure de l'ensemble des courroies se déplace entre une extrémité d'entrée recevant les fils de trame et une extrémité de sortie de ces fils de trame à partir de laquelle les fils de trame sont éloignés du carrousel, caractérisé en ce que, - les fils sont issus d'une pluralité de bobines (1) de fils de trame (28), - entre deux brins extérieurs de deux courroies (11) consécutives dites génératrices de préférence situées à la partie supérieure ou inférieure du carrousel (10), de préférence à la partie supérieure, deux rubans (20), dont l'un au moins est adhésif, sont déposés en continu et en regard l'un de l'autre sur les faces extérieure et intérieure des fils (28) au fur et à mesure de l'avance de ces fils sur la surface extérieure du carrousel, - le ruban est découpé en deux demi-rubans (22) dans la direction longitudinale et en continu, en un emplacement situé en amont de l'extrémité de sortie des fils de trame, - les demi-rubans (22) sont progressivement éloignés l'un de l'autre jusqu'à ce que les fils de trame (28) se retrouvent sensiblement parallèles entre eux et dans un plan horizontal, - ces fils de trame (28) étant alors placés au contact des fils de chaîne et les fils de trame et les fils de chaîne étant fixés à leurs points d'intersection. A method of manufacturing a textile grid formed of warp yarns and cross weft yarns fixed at their points of intersection, a process in which - we winding weft son substantially parallel on a carousel (10) having a substantially cylindrical shape generated by the outer strands of endless belts (11) parallel to each other and to the axis of the carousel and moving synchronously of such in such a way that the outer surface of the set of belts moves between an input end receiving the weft threads and an exit end of these weft threads from which the weft threads are moved away from the carousel, characterized in that that , the wires come from a plurality of bobbins (1) of weft threads (28), between two outer strands of two consecutive belts (11), preferably generators, located at the upper or lower part of the carousel (10), preferably at the top, two ribbons (20), at least one of which is adhesive , are deposited continuously and facing each other on the outer and inner faces of the son (28) as and when the advance of these son on the outer surface of the carousel, the tape is cut into two half-ribbons (22) in the longitudinal direction and continuously, at a location upstream of the output end of the weft threads, the half-ribbons (22) are progressively separated from each other until the weft threads (28) are substantially parallel to one another and in a horizontal plane, these weft threads (28) then being placed in contact with the warp threads and the weft threads and the warp threads being fixed at their points of intersection. Procédé selon la revendication 1, dans lequel on ajuste la vitesse linéaire des courroies (11) et/ou la vitesse de dépose des fils de trame (28) sur le carrousel (10) en fonction du pas des fils de trame souhaité, et ce pas constitue le pas des fils de trame dans la grille finale.A method according to claim 1, wherein the linear speed of the belts (11) and / or the rate of removal of the weft threads (28) on the carousel (10) is adjusted according to the pitch of the desired weft threads, and not constitute the pitch of the weft threads in the final grid. Procédé selon la revendication 1 ou 2, dans lequel on ajuste la circonférence du carrousel (10) en faisant varier la distance de tout ou partie des courroies (11) à l'axe du carrousel, et ce faisant on ajuste la largeur finale de la laize de fils de trame.A method according to claim 1 or 2, wherein the circumference of the carousel (10) is adjusted by varying the distance of all or part of the belts (11) to the carousel axis, and thereby adjusting the final width of the carousel (10). the width of the weft threads Installation pour produire une grille textile formée de fils de chaîne et de fils de trame (28) croisés et fixés à leurs points de croisement, comprenant, sur un même axe machine : - un carrousel (10) de courroies ayant une forme sensiblement cylindrique générée par les brins extérieurs de courroies sans fin (11) parallèles entre elles et à l'axe du carrousel et agencées de manière à pouvoir se déplacer de manière synchrone de telle manière que les brins extérieurs des courroies se déplacent entre une extrémité d'entrée et une extrémité de sortie du carrousel, - le moyen de distribution (5, 8) de fil de trame étant positionné à l'extérieur du carrousel (10) par rapport à l'axe machine et sensiblement dans le plan diamétral coupant l'extrémité d'entrée sur le carrousel, caractérisé en ce qu'elle comprend, sur le même axe machine, un ensemble tournant (9) portant au moins un moyen de réception (3) de bobine destiné à recevoir une bobine (1) de fil de trame (28) et un moyen de distribution (5, 8) de fil de trame issu de la bobine.Apparatus for producing a textile grid formed of warp threads and weft threads (28) crossed and fixed at their crossing points, comprising, on the same machine axis: a carousel (10) of belts having a substantially cylindrical shape generated by the outer strands of endless belts (11) parallel to each other and to the axis of the carousel and arranged so as to be able to move synchronously in such a way that the outer strands of the belts move between an inlet end and an exit end of the carousel, - the weft yarn distribution means (5, 8) being positioned outside the carousel (10) with respect to the machine axis and substantially in the diametral plane intersecting the entrance end on the carousel, characterized in that it comprises, on the same machine axis, a rotating assembly (9) carrying at least one coil receiving means (3) for receiving a coil (1) of weft yarn (28) and means distribution (5, 8) of weft yarn from the reel. Installation selon la revendication précédente, dans laquelle le carrousel comporte des moyens de réglage de la distance de tout ou partie des courroies par rapport à l'axe machine.Installation according to the preceding claim, wherein the carousel comprises means for adjusting the distance of all or part of the belts relative to the machine axis. Installation selon la revendication précédente, dans laquelle le carrousel comporte à ses deux extrémités deux plateaux (16) comportant des moyens de déploiement (17) synchrone des courroies permettant de faire varier la circonférence du carrousel.Installation according to the preceding claim, wherein the carousel has at its two ends two trays (16) having synchronous deployment means (17) of the belts for varying the circumference of the carousel. Installation selon l'une quelconque des revendications 4 à 6, dans laquelle le carrousel comporte entre 4 et 30, de préférence entre 12 et 20 courroies (11).Installation according to any one of claims 4 to 6, wherein the carousel comprises between 4 and 30, preferably between 12 and 20 belts (11). Installation selon l'une quelconque des revendications 4 à 7, comportant deux dérouleurs (19) de bobines de ruban (20) dont l'un au moins est adhésif, des premiers moyens de guidage de ruban depuis l'un de ces dérouleurs, ces premiers moyens étant agencés de manière à pouvoir amener, un premier ruban (20) à l'intérieur du carrousel, entre les deux brins extérieurs des deux courroies (11) dites génératrices, de préférence placées parallèlement et de part et d'autre de la génératrice supérieure ou inférieure, de préférence supérieure de la forme cylindrique du carrousel, et parallèlement à l'axe machine, et des deuxièmes moyens de guidage de ruban depuis l'autre de ces dérouleurs (19), ces deuxièmes moyens étant agencés de manière à pouvoir amener un deuxième ruban (20) à l'extérieur du carrousel, entre les deux brins extérieurs des courroies (11) génératrices et parallèlement à l'axe machine, l'installation comportant en outre des moyens d'application agencés de manière à pouvoir appliquer les deux rubans l'un contre l'autre au fur et à mesure de leur passage entre ces moyens d'application, des moyens d'entraînement de rubans agencés de manière à pouvoir entraîner les rubans (20), à la vitesse de déplacement des courroies du carrousel, depuis leur dérouleur (19) et à travers les moyens d'application, puis d'un dispositif de coupe (21) parallèle à l'axe machine disposé en aval des moyens d'application entre les deux brins extérieurs des courroies (11) génératrices.Installation according to any one of claims 4 to 7, comprising two unwinders (19) of ribbon coils (20) at least one of which is adhesive, first ribbon guide means from one of these unwinders, these first means being arranged so as to be able to bring a first ribbon (20) inside the carousel between the two outer strands of the two belts (11) called generatrices, preferably placed parallel and on both sides of the upper or lower generatrix, preferably upper of the cylindrical shape of the carousel, and parallel to the machine axis, and second tape guiding means from the other of these unwinders (19), these second means being arranged in such a way as to being able to bring a second ribbon (20) outside the carousel, between the two outer strands of the generating belts (11) and parallel to the machine axis, the installation further comprising means of application ation arranged so as to be able to apply the two tapes against each other as they pass between these application means, tape drive means arranged so as to cause the ribbons (20). , at the speed of movement of the carousel belts, from their unwinder (19) and through the application means, then from a cutting device (21) parallel to the machine axis disposed downstream of the application means between the two outer strands of the belts (11) generatrices. Installation selon l'une quelconque des revendications 4 à 8, comportant en outre deux moyens de renvoi (25) disposés en aval et à distance du carrousel (10), sur un plan horizontal et à une distance l'un de l'autre sensiblement égale à la circonférence du carrousel.Installation according to any one of claims 4 to 8, further comprising two return means (25) arranged downstream and away from the carousel (10), on a horizontal plane and at a distance from each other substantially equal to the circumference of the carousel. Installation selon l'une quelconque des revendications 4 à 9, dans laquelle l'ensemble tournant (9) comporte de 2 à 200, de préférence de 10 à 30 moyens de réception (3) de bobine.Installation according to any one of claims 4 to 9, wherein the rotating assembly (9) comprises from 2 to 200, preferably from 10 to 30 coil receiving means (3). Installation selon l'une quelconque des revendications 4 à 10, dans laquelle l'ensemble tournant (9) comporte une couronne (5) de distribution de trames comportant autant de guides-trame (8) que l'ensemble tournant (9) compte de moyens de réception (3) de bobine.Installation according to any one of claims 4 to 10, wherein the rotating assembly (9) comprises a frame distribution ring (5) comprising as many frame guides (8) as the rotating assembly (9). coil receiving means (3). Installation selon la revendication 11, dans laquelle les guides-trame (8), lorsqu'il y en a plusieurs, sont répartis régulièrement sur la couronne (5) de distribution.Installation according to claim 11, wherein the weft guides (8), when there are several, are evenly distributed on the crown (5) distribution. Installation selon l'une quelconque des revendications 4 à 12 ensemble la revendication 8 ou 9, comportant en outre un dispositif comportant deux rouleaux (26) parallèles, placés sensiblement perpendiculairement à l'axe machine, des moyens d'amenée de fils de chaîne suivant l'axe machine et des moyens de guidage des demi-rubans (22) entre les rouleaux (26) et à chaque extrémité de ceux-ci, de manière à permettre l'introduction des fils de trame (28) entre les rouleaux (26).Installation according to any one of claims 4 to 12 together claim 8 or 9, further comprising a device comprising two parallel rollers (26) placed substantially perpendicular to the machine axis, means for supplying next warp threads the machine axis and means for guiding the half-ribbons (22) between the rollers (26) and at each end thereof, so as to allow the introduction of the weft threads (28) between the rollers (26); ). Carrousel (10) comportant au moins 4, de préférence au moins 12 courroies sans fin (11) réparties régulièrement autour et parallèlement à un axe central, ces courroies (11) s'étendant chacune entre deux roues (12) situées dans un plan parallèle à l'axe central et l'ensemble des brins extérieurs des courroies générant une forme sensiblement cylindrique, les courroies étant susceptibles d'être mises en mouvement de manière synchrone et dans la même direction avec les brins extérieurs se déplaçant d'un plan de départ perpendiculaire à l'axe à un plan d'arrivée perpendiculaire à l'axe, caractérisé en ce qu'il comporte en outre des moyens d'amenée de ruban disposés sous la face inférieure de deux courroies (11) dites génératrices, de préférence placées parallèlement et de part et d'autre de la génératrice supérieure ou inférieure, de préférence supérieure de la forme cylindrique du carrousel, ces moyens d'amenée étant agencés de manière à pouvoir faire circuler un ruban entre les deux brins extérieurs des deux courroies (11) génératrices et sensiblement dans le plan de ces brins.Carousel (10) having at least 4, preferably at least 12 endless belts (11) regularly distributed about and parallel to a central axis, these belts (11) each extending between two wheels (12) in a parallel plane to the central axis and all the outer strands of the belts generating a substantially cylindrical shape, the belts being capable of being set in motion synchronously and in the same direction with the outer strands moving from a starting plane perpendicular to the axis at a plane of arrival perpendicular to the axis, characterized in that it further comprises ribbon feeding means arranged under the underside of two belts (11) called generatrices, preferably placed parallel and on either side of the upper or lower generatrix, preferably greater than the cylindrical shape of the carousel, these supply means being arranged so as to circulating a ribbon between the two outer strands of the two generating belts (11) and substantially in the plane of these strands. Carrousel (10) comportant au moins 4, de préférence au moins 12 courroies sans fin (11) réparties régulièrement autour et parallèlement à un axe central, ces courroies (11) s'étendant chacune entre deux roues (12) situées dans un plan parallèle à l'axe central et l'ensemble des brins extérieurs des courroies générant une forme sensiblement cylindrique, les courroies étant susceptibles d'être mises en mouvement de manière synchrone et dans la même direction avec les brins extérieurs se déplaçant d'un plan de départ perpendiculaire à l'axe à un plan d'arrivée perpendiculaire à l'axe, caractérisé en ce qu'il comporte à ses deux extrémités deux plateaux (16) comportant des moyens (17) de déploiement synchrone de tout ou partie des courroies (11), permettant de faire varier la circonférence de la forme cylindrique qu'elles génèrent.A carousel (10) having at least 4, preferably at least 12 endless belts (11) regularly distributed around and parallel to a central axis, these belts (11) each extending between two wheels (12) located in a plane parallel to the central axis and all the outer strands of the belts generating a substantially cylindrical shape, the belts being able to be set in motion by synchronously and in the same direction with the outer strands moving from a starting plane perpendicular to the axis to a plane of arrival perpendicular to the axis, characterized in that it comprises at its two ends two trays ( 16) comprising means (17) synchronously deploying all or part of the belts (11), for varying the circumference of the cylindrical shape they generate.
EP15175099.9A 2014-07-02 2015-07-02 Method of manufacturing textile grid and installation and related equipment Active EP2963171B1 (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2021038488A1 (en) * 2019-08-28 2021-03-04 Coppini Lorenzo Method and system for creating a non-woven fabric

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CH476881A (en) * 1965-10-20 1969-08-15 Chavanoz Moulinage Retorderie Device for manufacturing non-woven screens
FR2030408A1 (en) * 1969-02-10 1970-11-13 Isere Nord
FR2041041A1 (en) * 1969-02-03 1971-01-29 Isere Nord
FR2105237A1 (en) * 1970-09-04 1972-04-28 Isere Nord
FR2377467A1 (en) 1977-01-12 1978-08-11 Chavanoz Sa Mfr. of web of parallel weft threads for reinforcing paper, film, etc. - by positioning threads in circular form, aligned loops formed in parallel, cutting the loops and tensioning the thread sections formed
FR2518595A1 (en) * 1981-12-23 1983-06-24 Chomarat & Cie DEVICE FOR THE PRODUCTION OF A TABLE OF PARALLEL THREADS AND VARIOUS COMPLEX ARTICLES COMPRISING SUCH A TABLET
FR2848227A1 (en) * 2002-12-09 2004-06-11 Chomarat Composites Textile material for use as reinforcing layer has high ratio of weft yarns to warp yarns and laid at a non-perpendicular angle to one another

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH476881A (en) * 1965-10-20 1969-08-15 Chavanoz Moulinage Retorderie Device for manufacturing non-woven screens
FR2041041A1 (en) * 1969-02-03 1971-01-29 Isere Nord
FR2030408A1 (en) * 1969-02-10 1970-11-13 Isere Nord
FR2105237A1 (en) * 1970-09-04 1972-04-28 Isere Nord
FR2377467A1 (en) 1977-01-12 1978-08-11 Chavanoz Sa Mfr. of web of parallel weft threads for reinforcing paper, film, etc. - by positioning threads in circular form, aligned loops formed in parallel, cutting the loops and tensioning the thread sections formed
FR2518595A1 (en) * 1981-12-23 1983-06-24 Chomarat & Cie DEVICE FOR THE PRODUCTION OF A TABLE OF PARALLEL THREADS AND VARIOUS COMPLEX ARTICLES COMPRISING SUCH A TABLET
FR2848227A1 (en) * 2002-12-09 2004-06-11 Chomarat Composites Textile material for use as reinforcing layer has high ratio of weft yarns to warp yarns and laid at a non-perpendicular angle to one another

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021038488A1 (en) * 2019-08-28 2021-03-04 Coppini Lorenzo Method and system for creating a non-woven fabric

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ES2649158T3 (en) 2018-01-10
FR3023303B1 (en) 2019-04-26
EP2963171B1 (en) 2017-10-11

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