EP1339902B1 - Procede et dispositif de fabrication d'une meche comportant des filaments de verre - Google Patents

Procede et dispositif de fabrication d'une meche comportant des filaments de verre Download PDF

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Publication number
EP1339902B1
EP1339902B1 EP01982538A EP01982538A EP1339902B1 EP 1339902 B1 EP1339902 B1 EP 1339902B1 EP 01982538 A EP01982538 A EP 01982538A EP 01982538 A EP01982538 A EP 01982538A EP 1339902 B1 EP1339902 B1 EP 1339902B1
Authority
EP
European Patent Office
Prior art keywords
filaments
spinning
scraper
roll
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01982538A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1339902A1 (fr
Inventor
Alain Chabrol
Pierre Cervantes
Dominique Gerard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Adfors SAS
Original Assignee
Saint Gobain Vetrotex France SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Vetrotex France SA filed Critical Saint Gobain Vetrotex France SA
Publication of EP1339902A1 publication Critical patent/EP1339902A1/fr
Application granted granted Critical
Publication of EP1339902B1 publication Critical patent/EP1339902B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/16—Yarns or threads made from mineral substances
    • D02G3/18—Yarns or threads made from mineral substances from glass or the like
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/16—Yarns or threads made from mineral substances
    • D02G3/18—Yarns or threads made from mineral substances from glass or the like
    • D02G3/182—Yarns or threads made from mineral substances from glass or the like the glass being present only in part of the structure
    • D02G3/187—Yarns or threads made from mineral substances from glass or the like the glass being present only in part of the structure in the sheath

Definitions

  • the invention relates to obtaining a winding of a glass wick, made in particular of glass filaments directly from a die.
  • This die can be indifferently fed either in balls or pieces of glass other shapes (reflow fiber-drawing process), either in molten glass from of a furnace (direct fusion fiberization process).
  • the glass may be glass E, glass C, or any other composition likely to be fibered.
  • a known device as partially described in the patent application EP 0 928 840 consists of a drawing cylinder, located substantially vertically of the die and around which are wound in the form of a tablecloth the filaments of glass falling from the die, into a spinning assembly transforming the sheet of filaments in a wick, and in a winder for winding the wick.
  • the spinning assembly comprises a squeegee, or tool intended to scrape, swivel, adapted to abut against the surface of the cylinder to loosen the filaments of said cylinder after a rotation of approximately 270 °, and an elongated conical element parallel to the axis of rotation of the cylinder, located above the cylinder and presenting a longitudinal opening which is arranged in the continuity of the doctor blade and by which are directed the filaments after their detachment of the cylinder, the element oblong being traversed from one end to the other, centrally, by a wire of soul around which wrap the projected filaments in the form of a wick from the cylinder.
  • the wick comes out of the open conical end of the element oblong to be wound on the winder placed laterally to the oblong element.
  • the core wire is made of plastic material and used to provide a composite wick more resistant to traction than a composite wick only glass.
  • a set of pre-spinning which is disposed upstream of the spinning assembly, at substantially 180 ° relative to the arrival of the filaments on the drawing cylinder.
  • the location of the pre-spinning assembly is thus considered at the rear of the cylinder, the front being defined by the location of deposition of the filaments on the cylinder.
  • upstream and downstream are defined with respect to the direction of scrolling filaments on the cylinder from the die.
  • the pre-spinning assembly is essentially operated at beginning of the drawing of the filaments during the rise in speed of the cylinder.
  • the arrival of the filaments to the spinning assembly is short-circuited, thus avoiding obtaining a winding that would present at the beginning a wick in the title not conform to that provided by the standards.
  • the pre-spinning assembly is provided with a swivel squeegee capable of coming into stop on drawing cylinder and drum with internal spindle winding of the filaments.
  • the pre-spinning scraper takes off the filament web, therefore before its arrival on the squeegee, the filaments coming to wind around the spindle pre-spinning drum.
  • Pre-spinning squeegee is removed from the draw roll when the speed of the cylinder has reached a regime establishing the desired diameter filaments.
  • the operator In order to avoid too much accumulation of filaments around the spindle of the pre-spinning drum, the operator must proceed with the extraction at the back cylinder; however it should be able to simultaneously monitor in front of the cylinder any occasional breakage of the filaments delivered by the die, which would justify immediate intervention. So, at the start of the device winding or during a recovery of the winding after a breakage of filaments, two operators are in fact required, an operator who is solicited to be present at the back of the draw cylinder to assist manual extraction pre-spin drum, while the other is at the front to ensure the stretching of the filaments.
  • the existing device proves too bulky to allow an integration of several of them arranged side by side in an installation direct fusion.
  • the object of the invention is to obviate these disadvantages by providing a winding device of a glass wire whose operation generates a reduced manpower and high productivity.
  • Another object of the invention is to reduce the size of the device of spinning, allowing the insertion of one or more devices into a direct fusion fiberization, the dimensions of which are imposed by various technical and economic constraints.
  • the pre-spinning assembly is thus located at the front of the cylinder, a single operator is sufficient to manage and control the operation of the device.
  • This provision at the front of the drawing cylinder also has the advantage of not having to dispose of and manage only one glass waste sink that receives both the breakage filaments of the die and the flock formed around the drum spindle pre-spinning.
  • the receiving element of the spinning assembly has a bottom abutting the sliding surface of the doctor blade, a rear wall cylindrical concavity of longitudinal axis parallel to the axis of rotation of the cylinder and a longitudinal façade opening.
  • the receiving element is integral with the spin doctor and is arranged so that its bottom and the surface of slip of the squeegee are coplanar, moving the squeegee against the cylinder surface being realized by the pivoting of the spinning assembly.
  • the bottom of the receiving element and the surface of slip of the squeegee are embossed to help slip the filaments.
  • the guide means in the element of receiving the spinning assembly are provided to cross from one side to the other said receiving element in a diagonal line from one end lower front of the longitudinal opening to an upper lateral point of the receiving element.
  • the guide means consist rather in a traction wire, which may be glass or thermoplastic for example. This tractor wire can be either cut after the raise, or kept inside the wick, constituting in the latter case a core wire for the wick which he increases the tensile strength.
  • a Venturi tube capable of sucking the towing wire is arranged so as to project it into the receiving element of the set of spinning.
  • a guillotine is associated with the outlet of the Venturi tube to cut the towing wire after the beginning of winding of the wick.
  • a rotating annular device is provided at the exit of the receiving element of the spinning assembly towards the winder to round the wick. Just downstream of this ring device, is placed an air injection nozzle in front of which the wick passes to complete its smoothing.
  • Sizing means are provided arranged respectively upstream of the deposition of the filaments on the cylinder and upstream of the spinning assembly for coat the surface of the roll before depositing the filaments and filaments before their detachment of the cylinder, which ensures the sizing filaments over their entire outer periphery.
  • the device comprises at least two spinning assemblies arranged upstream of the pre-spinning device and suitable for work together or separately.
  • Each spinning set includes in this case a spinning squeegee whose width of the blade corresponds to a width part of the cylinder and complementary to the width of the other blade so as to separate and take off in two parts the filament web.
  • FIGS. 1 and 2 is illustrated the device of the prior art, it allows drawing glass filaments 10 from a die 11 and winding them onto a winder 12.
  • This device comprises a thread puller 13 which makes it possible to pre-stretch the filaments when falling from the die 11, a rotating drawing cylinder around which rolled in the form of a sheet the filaments 10 brought from the wire puller and clad against the surface 21 of the cylinder, substantially over its entire width and according to a deposition line L, a spinning assembly 30 comprising on the one hand a doctor blade retractable spinning device 31 disposed substantially at 270 ° from the deposit line L filaments and for detaching filaments when abutting against the surface 21 of the cylinder, and secondly, a receiving element 32 for the tapered filaments which is of conical shape, as well as a through core wire 40 the receiving element 32 and around which the filaments 10 are wound, the thread of core surrounded by the filaments being wound on the winder 12.
  • the device of the prior art also comprises a set of pre-spinning 50 consisting of a rotary pre-spinning drum 51, and a pre-spinning doctor blade 52 adapted to be moved or pivoted between a rest position and a operating position for which the doctor blade is pressed against the surface 21 of the cylinder at the beginning of the stretching of the filaments or during a restart of the drawing filaments after a breakage of these.
  • the rotary drum 51 comprises an internal pin 53 around which the projected filaments are wound in the drum via the doctor blade 52.
  • a sizing system 60 of the filaments is provided downstream of the pre-spinning assembly 50 and upstream of the spinning assembly 30, this system having a translation movement back and forth parallel to the axis of rotation of the cylinder 20 so as to spray the assembly the filament web rotating on the cylinder.
  • the device of the prior art operates as follows: the core wire 40 from a reel of wire not shown in Figures 1 and 2 is drawn to the winder 12 crossing the receiving element 32 of the set of spinning from one end to the other, parallel to the axis of rotation and so central, while the filaments 10 falling from the die 11 are brought manually against the surface 21 of the cylinder to be plated. Filaments are wrapped around the cylinder 20 in rotation and the pre-spinning assembly 50 is made operational at the start of the stretching of the filaments, that is to say at the beginning of the rotation of the cylinder. The sheet of filaments is peeled off by means of of the squeegee 52, the filaments being thrown into the drum 51 by force centrifuge that was transmitted to them during their rotation around the cylinder 20. They are then received around the internal pin 53 drum 52 and quickly form fluff, which is manually pulled by an operator, at medium for example of a wire puller, to avoid excessive accumulation in the drum 51.
  • the doctor blade 52 of the pre-spinning assembly 50 is raised in the rest position so that the filament web continues its rotation to the squeegee 31.
  • the spinning squeegee 31 was brought in the lowered position so that its blade presses on the surface 21 of the cylinder of so that the filaments come off the surface 21 and walk on the surface sliding surface 33 of the doctor blade, this sliding surface being inclined in direction of the receiving element 32 to which the filaments are guided, the projection of the filaments being favored by the centrifugal force that was transmitted during their rotation on the cylinder.
  • the reception element 32 presents a deflection wall 34 adapted to return the filaments to the core wire 40 passing through from one side and longitudinally said receiving element. Filaments wrapping around the core wire then constitute a wick M which is drawn to the winder 12 to be wound.
  • FIGS. 3 to 6 illustrate the device of the invention, the common elements to the device of the prior art are identified by identical references.
  • the device of the invention provided with its drawing cylinder 20 comprises even a spinning assembly 30 and pre-spinning assembly 50, as well as means 40 for guiding the web of the spinning assembly to the winder, which are constituted by a tractor wire.
  • the set of pre-spinning 50 has been disposed downstream of the spinning assembly 30, and preferably beyond 270 ° of the deposit line L so that the filaments, thus starting the lowering the cylinder, are more easily caught by the pre-spinning doctor blade 52.
  • This new provision of the invention makes it possible to solicit only one only operator, since it can remain positioned at the front of the cylinder 20 of way to pull on the wrap wrapped around the pin 53 of the set of pre-spinning 50 when starting the device while monitoring the stretching of the filaments from die 11 in order to be able to intervene immediately in case of break the filaments.
  • the flock also wraps up much more easily because filaments are driven in the downward direction of the cylinder.
  • a waste pit common 14 is sufficient to collect the floss and glass in case of breakage.
  • the location of the pre-spinning assembly of the prior art in upstream of the spinning assembly had the disadvantage that at the time of raise the pre-spinning doctor to allow the tablecloth to reach the squeegee spinning, the risk that the blade of the pre-spinning squeegee hangs some filaments existed, damaging the sheet of filaments arriving towards the spinning assembly.
  • the spinning assembly 30 comprising the doctor blade 31 and the element of reception 32 differs from that of the prior art in that the element of reception 32 does not have a conical shape.
  • the conical shape of art front towards the exit of the core wire towards the winder allows to channel the circulating air to facilitate the winding of the filaments around the core wire and facilitates the guiding of the wire surrounded by the filaments. The invention achieves this goal differently.
  • the spinning assembly visible in FIGS. 5 and 6 comprises a bottom 36 of width equivalent to that of the cylinder 20, the side walls 35 and a wall cylindrical rear longitudinal 34 which delimit an opening of 37 longitudinal facade, the rear wall 34 having a function identical to the deflection wall of the prior art.
  • the bottom 36 is inclined according to the slope of the sliding surface 33 of the spinning bay.
  • the blade 31 is integral with said bottom 36 to ensure perfect continuity of sliding surface for the filaments; and by the way, this fastening has the advantage of only rotating one piece.
  • the bottom 36 as the surface 33 of the doctor blade are advantageously embossed.
  • the cylindrical shape of the rear wall 34 generates a concavity which is a deflecting surface of circulating air to facilitate winding filaments projected around the tractor wire 40.
  • the side wall 35 located on the side of the winder 12 is provided with an orifice 38 allowing the withdrawal of the towing wire surrounded by the filaments towards the winder, the thread tractor 40 being unwound from a reel 41, and running in the element of receiving 32 along a diagonal that starts from the lower lateral end 39 of the opening 37 located opposite the side wall 35 provided with the orifice 38 and which opens out at the orifice 38.
  • the tow wire 40 may advantageously be brought to the level of the end 39 by means of a Venturi tube 42 ensuring the aspiration and the projection of the wire to be recovered manually at the level of the orifice 38 by a brush not shown.
  • the diagonal path followed by the tractor wire implies that the distance between the sheet of filaments and the tow wire passing at the end 39 is minimized so that upon the arrival of the web on the sliding surface 33 of the squeegee after its detachment by the blade 31a of the squeegee, first filaments can begin to wrap in order to cause the following of the tablecloth as a snowball effect which guarantees a better winding of filaments, unlike the prior art showing a soul wire arranged so central in the oblong element accommodating the glass filaments.
  • the towing wire of the invention is not necessarily plastic as in the prior art but may be simply glass. Thread tractor is not primarily intended to guarantee a stronger wire but primarily serves as a guide wire and stimulus. Indeed, this tractor wire is necessary for the formation of the wick to then be pulled to the winder in order to be rolled up.
  • the towing wire or guidance becomes no longer indispensable since the filaments of the wick pulled by the winding of the latter automatically lead the filaments peeling off the cylinder.
  • a guillotine 43 which serves to cut the towing wire after the beginning of the winding of the wick.
  • the tow wire in case of breakage of the wick, the tow wire, then called recovery, is again essential to revive the winding of the filaments around it as soon as they detach from the cylinder.
  • Traction wire 40 also has the advantage of allowing the arrangement of the winder 12 at any location relative to the spinning assembly, that either on the same level or on a different floor making the wick's journey non-rectilinear output of the spinning assembly, the towing wire constituting a wire guide and total support for the entire wick which facilitates its conduct along a more sinuous path lowering the risk of breaking the wick.
  • the thread 40 is above all a tow wire according to the invention and not necessarily a wire soul since it is usually cut from the beginning of winding of the wick.
  • a device 70 At the exit of the orifice 38 is arranged a device 70 called "false twist" constituted by a annular member rotating at high speed through which the wick to roll on itself to round it up.
  • a device 70 it is still necessary at the exit of the device 70 to adjust the volume of the wick so that it is not shaggy the otherwise rendering it unusable, but that the filaments remain in alignment with the wick.
  • An air injection nozzle 71 located immediately downstream of the device 70 is therefore intended to further entangle the filaments and smooth the outer surface of the wick.
  • a power-up system 72 well known in the state of the art, consisting of bars staggered so that the wick straddles these bars, is disposed after the nozzle 71 to give the wick the voltage necessary for the correct construction of the coil which must reach a density of 400 kg / m 3 .
  • a second spray system 61 is provided (FIG. 3), positioned downstream of the pre-spinning assembly 50 and upstream of the deposit line L filaments to coat the surface 21 of the cylinder 20 to ensure a perfect sizing of the inner surface of the sheet of filaments that stick to the same the surface 21 of said cylinder.
  • an articulated arm not shown is provided for mechanically positioning the filaments on the cylinder.
  • each spinning assembly comprises a doctor blade whose blade 31a has a length which corresponds to the number of filaments desired to be peeled off to separate the filament web into two separate parts so winding, respectively, with two separate tractive wires, two wicks on two individual winders.
  • the arrangement of the pre-spinning assembly 50 downstream of the two sets In particular, spinning makes it possible to operate only one spinning assembly for winding only a part of the sheet if necessary, for example for tests, the other part of the sheet being recovered by the pre-spinning assembly to be directly thrown into the waste pit 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Glass Compositions (AREA)
EP01982538A 2000-12-05 2001-10-24 Procede et dispositif de fabrication d'une meche comportant des filaments de verre Expired - Lifetime EP1339902B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0015743 2000-12-05
FR0015743A FR2817548B1 (fr) 2000-12-05 2000-12-05 Procede et dispositif de fabrication d'une meche comportant des filaments de verre
PCT/FR2001/003298 WO2002046506A1 (fr) 2000-12-05 2001-10-24 Procede et dispositif de fabrication d'une meche comportant des filaments de verre

Publications (2)

Publication Number Publication Date
EP1339902A1 EP1339902A1 (fr) 2003-09-03
EP1339902B1 true EP1339902B1 (fr) 2005-04-06

Family

ID=8857249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01982538A Expired - Lifetime EP1339902B1 (fr) 2000-12-05 2001-10-24 Procede et dispositif de fabrication d'une meche comportant des filaments de verre

Country Status (18)

Country Link
US (1) US20040025543A1 (cs)
EP (1) EP1339902B1 (cs)
JP (1) JP2004515659A (cs)
KR (1) KR20030060107A (cs)
CN (1) CN1330807C (cs)
AT (1) ATE292701T1 (cs)
AU (1) AU2002214092A1 (cs)
BR (1) BR0115922A (cs)
CZ (1) CZ20031426A3 (cs)
DE (1) DE60109957T2 (cs)
ES (1) ES2240536T3 (cs)
FR (1) FR2817548B1 (cs)
MX (1) MXPA03004304A (cs)
NO (1) NO20032536L (cs)
PL (1) PL362353A1 (cs)
RU (1) RU2238353C1 (cs)
SK (1) SK286546B6 (cs)
WO (1) WO2002046506A1 (cs)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842516B1 (fr) 2002-07-18 2004-10-15 Saint Gobain Vetrotex Composition d'ensimage pour verranne, procede utilisant cette composition et produits resultants
GB0220434D0 (en) 2002-09-03 2004-03-17 Qinetiq Ltd Detection device
CN103935838A (zh) * 2014-03-27 2014-07-23 吴江明佳织造有限公司 文丘里管并纱器
RU2693152C2 (ru) * 2015-01-06 2019-07-01 Филипс Лайтинг Холдинг Б.В. Способ и печатающая головка для трехмерной печати стекла
CN106283220B (zh) * 2016-11-08 2018-12-04 北京化工大学 一种热气流辅助双静电场静电纺丝装置
CN110845136B (zh) * 2019-12-11 2024-01-05 杭州天启机械有限公司 拉丝机换筒无头尾纱粘连机构

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621444A (en) * 1948-04-21 1952-12-16 Schuller Werner Process and apparatus for the continuous production of a sliver or roving from fibers of glass, plastic, or like substances
IT8423739V0 (it) * 1984-11-09 1984-11-09 Rockwell Rimoldi Spa Dispositivo taglia catenella con struttura perfezionata, in particolare per macchina da cucire di uso industriale.
DE3634904A1 (de) * 1986-10-14 1988-04-28 Schuller Gmbh Glaswerk Verfahren zur herstellung eines mischfaserbandes aus glasfasern und fasern oder faeden anderen materials
FR2698038B1 (fr) * 1992-11-19 1995-01-27 Vetrotex France Sa Procédé et dispositif de formation d'un fil composite.
FR2750979B1 (fr) * 1996-07-10 1998-10-02 Vetrotex France Sa Dispositif pour la fabrication d'un fil composite
DE19800725C2 (de) * 1998-01-12 2001-06-13 Schuller Gmbh Faserverbund in Strangform und Verfahren und Vorrichtung zu seiner Herstellung

Also Published As

Publication number Publication date
FR2817548B1 (fr) 2003-01-10
SK6672003A3 (en) 2003-11-04
CN1330807C (zh) 2007-08-08
CZ20031426A3 (cs) 2003-08-13
PL362353A1 (en) 2004-10-18
NO20032536L (no) 2003-07-08
RU2238353C1 (ru) 2004-10-20
ES2240536T3 (es) 2005-10-16
DE60109957T2 (de) 2006-02-16
ATE292701T1 (de) 2005-04-15
NO20032536D0 (no) 2003-06-04
US20040025543A1 (en) 2004-02-12
AU2002214092A1 (en) 2002-06-18
EP1339902A1 (fr) 2003-09-03
MXPA03004304A (es) 2003-08-19
SK286546B6 (sk) 2008-12-05
FR2817548A1 (fr) 2002-06-07
DE60109957D1 (de) 2005-05-12
BR0115922A (pt) 2003-09-16
WO2002046506A1 (fr) 2002-06-13
CN1478157A (zh) 2004-02-25
KR20030060107A (ko) 2003-07-12
JP2004515659A (ja) 2004-05-27

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