Background of the Invention
[0001] An apparatus for processing a filament yarn according to the preamble of claim 1
is known from GB-A-526 635.
[0002] The present invention relates to a textile machine for processing a filament yarn,
wherein the yarn is advanced by a feed system into a treatment zone and withdrawn
from the treatment zone by means of an extraction system, and wherein a yarn accumulator
is arranged downstream of the feed system for temporarily storing the yarn in the
event of a yarn break or other irregularity in the advance of the yarn.
[0003] A machine of the described type is known, for example, from DE-OS 22 54 736. In a
machine of this type, it is necessary to withdraw the yarn from its production or
processing zone always at a higher speed than it is supplied thereto. With this type
of yarn delivery, irregularities often occur in the yarn delivery. These irregularities
may be caused by the yarn production method itself, or they may be caused by a disturbance
in the subsequent steps of the process. Such irregularities in the yarn delivery can
easily result in breakdowns of the process, such as by having the yarn become entangled,
or by the yarn forming laps. The problem of lap formation is of very great importance
in the operation of textile machinery, inasmuch as laps can damage a textile machine.
Such a formation of laps may occur, even when there are only short-time irregularities
in the yarn delivery, which can develop, for example, in the takeup zone of the textile
machine, especially when it is necessary to transfer the continuously advancing yarn
from a fully would package to an empty tube.
[0004] The known apparatus also has the disadvantage that it requires an adequately strong
source of compressed air, and must either be in operation continuously, or be shut
down, when breakdowns occur. By the time the apparatus becomes operative, it may however
be already too late to avoid the above noted problems.
[0005] As a further disadvantage, it is recognized that upon yarn breaks occurring downstream
of the feed system, the dropping yarn end may become entangled, or be wound in other
feed systems, or it may wrap about other rotating elements of the processing station
for that yarn or adjacent processing stations. Also, if worst comes to worst, the
dropping yarn end may even damage the machine elements. Finally, it is very difficult
to subsequently remove the yarn residues.
[0006] It is accordingly an object of the present invention to provide an apparatus for
temporarily accumulating a quantity of yarn resulting from the slackening or breakage
of the yarn downstream of a yarn feed system, and which is constantly ready of operation
and does not require auxiliary equipment.
[0007] It is a further object of the present invention to provide a yarn accumulator of
the described type which has provision for catching a dropping yarn end upon a yarn
break, and rendering the end harmless.
Summary of the Invention
[0008] The above and other objects and advantages of the present invention are achieved
through a filament yarn processing apparatus according to claim 1. Such an apparatus
comprises a yarn feed means for advancing the yarn along an operative path of travel
and to a treatment zone, and a yarn accumulator positioned immediately downstream
of a yarn feed means, and which comprises a deflecting plate having opposite side
edges. The plate is positioned generally transverse to the operative yarn path of
travel, with one of the side edges of the plate being adjacent the operative path
of travel. Thus the advancing yarn is not significantly deflected by the plate when
advancing along its operative path of travel. However, in the event of a yarn break
or the like, the advancing yarn engages the plate.
[0009] The yarn feed means defines a natural yarn delivery path along which the yarn is
advanced in the absence of guidance downstream of the feed means, and to insure that
the advancing yarn engages the plate in the event of a yarn break or the like, the
plate is preferably positioned so as to intersect the natural yarn delivery path.
[0010] The yarn accumulator also comprises a yarn guide disposed on the side of the operative
yarn path of travel opposite from the one side edge of the plate, and such that the
operative yarn path of travel runs between the one side edge of the plate and the
yarn guide.
[0011] In accordance with the present invention, the deflecting plate causes the quantities
of yarn to accumulate at a harmless place and, as a result of this accumulation, to
then appear no longer as an individual yarn. While an individual yarn is easily caught
by other machine elements as a result of unavoidable air currents, the resulting accumulation
retains the yarn and is not susceptible to the air currents because of its larger
mass.
[0012] The use of the present invention does in general not require any modifications of
the textile processing machine. However, it may be useful to offset the yarn withdrawal
or extraction device relative to the feed system, so that the extraction device does
not extend along the natural yarn delivery path of the yarn feed means. This natural
yarn delivery path is in general the tangent to the feed system, or in a so-called
pressure-roll type feed system, the common tangent to the driven feed roll and the
pressure roll. However, even without such modification, the deflecting plate is effective,
since it is arranged always in the direct vicinity of the operative yarn path, or
even in the operative yarn path, in the case of a regular advance, which is predetermined
by the feed system and the extraction device.
Brief Description of the Drawings
[0013] Some of the objects and advantages of the present invention having been stated, others
will appear as the description proceeds, when considered in conjunction with the accompanying
drawings, in which
Figure 1 is a cross sectional view of a yarn false twist texturizing machine which
embodies the present invention;
Figure 2A is an enlarged fragmentary view of the portion of Figure 1 illustrated within
the area II;
Figures 2B and 2C are top plan and side elevation views respectively, of a slightly
modified version of the accumulator shown in Figures 1 and 2A;
Figure 3 is a cross sectional view of a yarn false twist crimping machine showing
another embodiment of the invention;
Figure 3A is a fragmentary cross sectional view of the deflecting plate of the present
invention and illustrating one embodiment of an adhesive coating applied thereto;
Figure 4 is a fragmentary view of a portion of the false twist crimping machine shown
in Figure 3; and
Figure 5 is a view similar to Figure 4 but further illustrating a container bin for
collecting the waste yarn.
Detailed Description of the Preferred Embodiments
[0014] The embodiments as described below illustrate the invention used in association with
a yarn false twist texturing machine for processing synthetic filament yarns. It will
be understood however, that the invention is useable with other textile processing
machines which include a yarn feed means for advancing a yarn along an operative path
of travel.
[0015] As schematically illustrated in Figures 1 and 3, the texturing machine comprises
a yarn supply package
10, on which a thermoplastic filament yarn
12 is wound. The yarn
12 is withdrawn under a certain tension by a feed system
18 via a yarn guide
14. In the direction of the advancing yarn, downstream of feed system
18, a first, elongate heater
20 extends, over which the yarn advances and is heated to a predetermined temperature.
Arranged at the outlet end of heater
20 is a further yarn guide
22, which deflects the yarn so as to advance it to a cooling plate
24. The heater
20 and cooling plate
24 may be arranged relative to one another approximately in a roof-like configuration,
with the yarn guide roll
22 forming the apex of the roof-like structure. Below the cooling plate
24 is a conventional false twist unit schematically illustrated at
28, which for example may be structured in accordance with German Patent 22 13 881 or
U.S. Patent 4,339,915. Arranged downstream of the false twist unit
28 is a further feed system
30, which serves to draw the yarn both over the heater
20 and the cooling plate
24.
[0016] In the direction of the advancing yarn, and below the feed system
30 is a set heater, which is constructed as a curved heating tube
34 which is surrounded by a heating jacket
32. The latter serves to heat the heating tube
34 externally with vapor to a predetermined temperature. Preferably, the heating tube
34 and its jacket are arranged upright.
[0017] Heating tube
34 is connected seamlessly, i.e., in an airtight manner, to an equalizing tube
42. Also, a yarn guide
44 is positioned in the bent portion of a channel
38, which joins the heating tube
34 to the equalizing tube
42, and the yarn guide
44 is constructed as a pin or roll with a peripheral groove.
[0018] Arranged at the outlet end of tube
42 is a further feed system
46. The latter is a pressure-roll type feed system, and comprises a driven feed roll
46.1 and a pressure roll
46.2, which freely rotates and presses the yarn in a slip-free manner against the feed
roll. Adjacent thereto is a yarn accumulator
1 which is described further below. The yarn is wound on a takeup package
50 which is driven on its circumference by a friction roll
52. A traversing mechanism
54 is positioned upstream of the friction roll
52, which reciprocates the yarn
12 along package
50, and causes it to be wound in a cross wound package. A suction tube
62 (Figure 2A) with radial holes precedes the yarn traversing mechanism. The suction
tube
62 allows the yarn to be removed by suction, when the package
50 is fully wound, and when for purposes of doffing the package the yarn needs to be
cut between suction tube
62 and yarn traversing mechanism
54.
[0019] Located above equalizing tube
42 is a platform
56, which is supported by rails or posts
58 on the floor
60 and which serves as an operator's aisle.
[0020] Figure 2A is an enlarged detail view of the takeup zone within the area II of Figure
1, and in particular Figure 2A illustrates in more detail the yarn accumulating device
1, which becomes operative, when the yarn breaks or slackens.
[0021] As best seen in Figures 2A-2C, the yarn accumulator
1 comprises a yarn guide
2 and a deflecting plate
3, which are mounted to a common support
4. The deflecting plate
3 has opposite side edges 5, 6, and it is angled along an apex line 7 to define two
plate segments 8, 9, which are inclined with respect to each other in V-shape at an
angle of about 90°. When viewed in the direction of the yarn advance as illustrated
in Figure 2B, the apex line 7 extends toward the yarn guide
2. Also, the yarn guide
2 lies at a short distance behind deflecting plate
3.
[0022] The plate
3 may for example consist of two flat metal sheets, which are joined along the apex
line
7, or it may comprise a unitary flat metal sheet which is bent in V-shape along the
apex line.
[0023] The deflecting plate
3 may alternatively be a flat surface, or it may have the shape of a funnel, the axis
of which extends approximately in the natural direction of the operative yarn advance.
Also, the deflecting plate
3 may be provided with an adhesive coating on the side thereof facing the yarn feed
system, for the purpose of retaining a broken yarn end as further described below.
This adhesive coating for example may comprise a film which is coated on both sides
with an adhesive material, and which is applied to the plate so that one coated side
is exposed. Alternatively, the deflecting plate may be covered with a cling tape which
has a hook-like fibrous adhesive coating as schematically illustrated in Figure 3A.
[0024] The plate
3 is mounted so as to be generally transverse to the operative yarn path of travel,
and with the side edge
5 being spaced from but closely adjacent the path of travel. Also, the yarn guide
2 is disposed on the side of the yarn path of travel opposite from the side edge
5 of the plate
3, and such that the yarn path of travel runs between the side edge
5 and the yarn guide
2 in normal operation. Thus, the advancing yarn is not deflected by the plate
3 during normal operation.
[0025] The yarn guide
2 is provided, on the one hand, with a yarn guide element, which is arranged likewise
closely adjacent the operative yarn path of travel. The guide surface of the yarn
guide extends along an extension of the apex line
7, which is formed by deflecting plate
3, but is slightly spaced apart from its side edge
5. Consequently, there exists a gap between the side edge
5 of deflecting plate
3 and the guide edge of yarn guide
2, which permits the yarn advancing under tension to pass without contacting, as best
seen in Figure 1. The guide element of yarn guide
2 is laterally bordered by guide plates, which cover the side edge
5 of the deflecting plate and form a lateral boundary of the yarn path. The arrangement
of the deflecting plate
3 and the yarn guide
2 in the machine is such that the apex line
7 of the deflecting plate is aligned approximately perpendicularly with respect to
the yarn path of travel.
[0026] In the machine illustrated in Figure 1, the yarn is wound free of trouble, and consequently
the yarn advances along its operative path of travel and under an adequate tension
between feed system
46 and the takeup. As a result, the yarn accumulator remains inoperative in this operating
condition. Shown in Figure 2A, is the situation when the yarn is cut between suction
tube
62 and yarn-traversing mechanism
54, and subsequently pulled into the interior of suction tube
62. At this moment, the speed at which the yarn is withdrawn from feed system
46 is considerably reduced for a short time. As a result, there may arise the risk that
the excessive amount of yarn entangles, forms laps, or leads to other disturbances.
This is prevented by the yarn accumulator
1 of the present invention, which is arranged at a short distance downstream of feed
system
46.
[0027] In the event the yarn is no longer advanced under an adequate tension, the yarn will
impact against the deflecting plate at the apex line
7 between the two flat segments
8, 9 of deflecting plate
3. To this end, the yarn accumulator is arranged such that the deflecting plate is
positioned along the common tangent to the feed roll
46.1 and the pressure roll
46.2 of the feed system
46. Upon impacting the deflecting plate, the yarn starts to pile up. Thereafter, the
yarn is pulled out from this pile by the suction device
62. The quantity of yarn which accumulates in this pile, is variable. The present invention
thereby accommodates without harm a condition wherein the feed system
46 delivers a constant quantity of yarn but the quantity of yarn withdrawn is not constant
as a result, for example, of the interrupted takeup or irregularities of the process.
[0028] In the false twist crimping machine illustrated in Figure 3, as well as Figures 4
and 5, a deflecting plate
3 mounted to a common support
4 is positioned downstream of the first feed system
18, which advances the yarn in the direction of the heater
20. The second feed system
30 which is adjacent the false twist unit
28 serves as a yarn withdrawal or extraction system.
[0029] Figure 3 illustrates the yarn in its normal or operative path of travel. Figures
4 and 5 illustrate the operating condition, in which a yarn end is down, and the broken
yarn end is continuously supplied by the feed system
18. In this operating condition, one may incur the risk that the broken yarn end enters
into takeup package
50, the drive elements of which, in particular friction roll
52 and yarn traversing mechanism
54 continue to be in operation. The broken yarn end also may be caught in an adjacent
processing station. These potential problems are avoided with the yarn accumulator
1, which is arranged at a short distance from the outlet end of the feed system
18. The structure of the yarn accumulator corresponds to that of Figures 2A-2C, as described
above.
[0030] In operation, the yarn advances under tension along its operative path of travel,
so that it passes between and does not contact either the side edge
5 of deflecting plate
3 and the guide edge of yarn guide
2. It is however possible to also offset the yarn accumulator relative to the yarn
path, so that the yarn is slightly deflected on the deflecting plate or the yarn guide.
This would involve only a matter of yarn tension and wear. In the event the yarn breaks,
it is no longer under tension and is ejected by feed system
18 against the deflecting plate, namely into the apex line
7 between the two flat surfaces of deflecting plate
3. To this end, the yarn accumulator is arranged such that the deflecting plate extends
along the common tangent to the feed roll and pressure roll of feed system
18, or in a position which has previously been found by tests to intersect with the
natural yarn delivery path along which the yarn is advanced in the absence of guidance
downstream of the feed system
18.
[0031] When impacting upon the deflecting plate, the yarn piles up. In the embodiment of
Figure 4, it is assumed that the deflecting plate is provided with an adhesive coating
as described above. As a result of the coating, the yarn will adhere to this adhesive
coating, thus avoiding the risk that the yarn comes into contact with other rotating
machine elements or drifts freely in the machine and is entrained by an air current.
Thereafter, the film may be simply pulled off the deflector plate, thereby removing
the yarn residue. Where a cling tape is employed as illustrated in Figure 3A, the
tape can be simply torn away from the deflecting plate, after a yarn break has occurred
and yarn material has piled up.
[0032] In the embodiment of Figure 5, the deflecting plate
3 is not covered with an adhesive coating. Therefore, the accumulated quantity of yarn
drops from the deflecting plate in the form of a yarn tangle. However, a collecting
bin
26 is provided below the deflecting plate, which is positioned so as to collect the
accumulated tangle.
[0033] The natural yarn delivery path of the feed system in the meaning of this invention
is theoretically the tangent to the point, at which the yarn leaves the feed system,
or the common tangent, when the feed system is of the nip type or employs nip rolls.
Practically, however, deviations may result, for example, when in a feed system employing
nip rolls, the yarn adheres more to one of the rolls than to the other. Deviations
may also result, when the yarn is "spat out" in a horizontal direction, provided it
is under no tension. Therefore, in cases of doubt, it will be necessary to determine
by test the natural yarn delivery path of the yarn when under no tension or low tension.
Under some circumstances, it may also be necessary to consider the speed of the feed
system.
[0034] In the drawings and specifications, there has been set forth a preferred embodiment
of the invention, and although specific terms are employed, they are used in a generic
and descriptive sense only and not for purposes of limitation.
1. An apparatus for processing a filament yarn (12) and comprising
yarn feed means (18, 46) for advancing the yarn along an operative path of travel
and to a treatment zone, and
a yarn accumulator (1) positioned immediately downstream of said yarn feed means (18,
46) for temporarily storing the yarn upon a yarn break or the like, said yarn accumulator
(1) comprising a deflecting plate (3) having opposite side edges (5, 6), with said
plate being mounted generally transverse to the operative path of travel and with
one of said side edges (5) being adjacent the operative path of travel, and such that
the advancing yarn is not significantly deflected by the plate (3) when advancing
along the operative path of travel but the advancing yarn does engage the plate upon
a yarn break or the like, characterized in that
said yarn accumulator (1) further comprises a yarn guide (2) disposed on the side
of said operative yarn path of travel opposite from said one side edge of said plate,
and such that the operative yarn path of travel runs between said one side edge of
said plate and said yarn guide.
2. The apparatus as defined in Claim 1 wherein said plate (3) is angled along an apex
line (7) to define two plate segments (8, 9) which are inclined with respect to each
other, and with the apex line (7) extending toward said yarn guide when viewed in
the direction of the yarn advance.
3. The apparatus as defined in Claim 2 wherein the deflecting plate (3) is coated with
an adhesive material on the side thereof facing said yarn feed means (18, 46).
4. The apparatus as defined in Claim 1 further comprising a yarn collection bin (26)
positioned below said deflecting plate (3) so as to be adapted to receive the yarn
after the yarn engages the deflecting plate.
5. The apparatus as defined in Claim 1 wherein said one side edge (5) of said plate (3)
is spaced from the operative yarn path of travel and such that the advancing yarn
is not deflected by the plate when advancing along the operative path of travel.
6. The apparatus as defined in Claim 1 wherein said yarn feed means (18, 46) defines
a natural yarn delivery path along which the yarn is advanced in the absence of guidance
downstream of the feed means, and wherein said deflecting plate (3) is positioned
so as to intersect the natural yarn delivery path.
7. The apparatus as defined in Claim 1 wherein said yarn feed means (46) comprises a
driven feed roll (46.1) and a cooperating pressure roll (46.2) which engages the feed
roll so as to define a common tangent, and wherein said deflecting plate (3) is positioned
along the common tangent of said rolls.
8. The apparatus as defined in Claim 1 wherein said treatment zone comprises yarn false
twisting means comprising, in serial arrangement, an elongate heater (20), an elongate
cooling plate (24), a false twisting unit (28), and a second yarn feeding means (30).
9. The apparatus as defined in Claim 1 wherein said treatment zone comprises a yarn winding
apparatus (54) for winding the advancing yarn into a cross wound package (50).
1. Vorrichtung zur Bearbeitung eines Fadens (12) umfassend
Fadenfördermittel (18, 46) zum Fördern des Fadens entlang eines Bearbeitungsweges
und zu einer Behandlungszone, und
einen Fadenspeicher (1), der unmittelbar in Fadenlaufrichtung hinter den Fadenfördermitteln
(18, 46) angeordnet ist zum vorübergehenden Speichern des Fadens nach einem Fadenbruch
oder dergleichen, wobei der Fadenspeicher (1) eine Prallplatte (3) mit gegenüberliegenden
Seitenkanten (5, 6) aufweist, wobei diese Platte im wesentlichen senkrecht zu dem
Fadenbearbeitungsweg angeordnet und mit einer ihrer Seitenkanten (5) benachbart zu
dem Fadenlaufweg angeordnet ist, so daß der laufende Faden durch die Platte (3) nicht
wesentlich abgelenkt wird, wenn er entlang des Fadenbearbeitungsweges läuft, aber
daß der laufende Faden die Platten nach einem Fadenbruch oder dergleichen trifft,
dadurch gekennzeichnet, daß der Fadenspeicher (1) weiterhin einen Fadenführer (2)
aufweist, der auf der Seite des Fadenbearbeitungsweges angeordnet ist, die gegenüber
der genannten einen Seitenkante dieser Platte angeordnet ist, und zwar so, daß der
Fadenbearbeitungsweg zwischen dieser Seitenkante der Platte und dem Fadenführer verläuft.
2. Vorrichtung nach Anspruch 1, bei der die Platte (3) entlang einer Knicklinie (7) abgewinkelt
ist, wodurch zwei Plattensegmente (8, 9) definiert werden, welche zueinander angewinkelt
sind, wobei die Knicklinie (7) in Fadenlaufrichtung gesehen in Richtung auf den Fadenführer
verläuft.
3. Vorrichtung nach Anspruch 2, wobei die Prallplatte in (3) auf der den Fadenfördermittel
(18, 46) zugewandten Seite mit einem klebrigen Material beschichtet ist.
4. Vorrichtung nach Anspruch 1, zusätzlich aufweisend einen Fadensammelbehälter (26),
der so unterhalb der Prallplatte (3) angeordnet ist, daß er geeignet ist, den Faden
nach Aufprall auf die Prallplatte aufzunehmen.
5. Vorrichtung nach Anspruch 1, bei der die eine Seitenkante (5) der Platte (3) von dem
Fadenbearbeitungsweg beabstandet ist, so daß der laufende Faden nicht von der Platte
abgelenkt wird, wenn er entlang des Fadenbearbeitungsweges läuft.
6. Vorrichtung nach Anspruch 1, bei der die Fadenfördermittel (18, 46) einen natürlichen
Fadenlieferweg definieren, entlang welchem das Garn in Abwesenheit von Fadenführern
hinter den Transportmitteln bewegt würde, wobei die Prallplatte (3) so positioniert
ist, daß sie den natürlichen Fadenförderweg schneidet.
7. Vorrichtung nach Anspruch 1, bei der die Fadenfördermittel (46) eine angetriebene
Transportrolle (46.1) aufweisen und eine kooperierende Andruckrolle (46.2), die die
Transportrolle berührt und eine gemeinsame Tangente definiert und wobei die Prallplatte
(3) entlang der gemeinsamen Tangente dieser Rollen angeordnet ist.
8. Vorrichtung nach Anspruch 1, bei der die Behandlungszone Falschdrallgeber aufweist,
die in serieller Anordnung einen langgestreckten Heizer (20), eine langgestreckte
Kühlplatte (24), eine Falschdralleinheit (28) und zweite Fadentransportmittel (30)
aufweisen.
9. Vorrichtung nach Anspruch 1, bei der die Behandlungszone eine Fadenspuleinrichtung
(54) aufweist zum Aufwickeln des laufenden Fadens zu einer Kreuzwickelspule (50).
1. Appareil pour traiter un fil continu (12) et comprenant :
des moyens (18, 46) d'amenée de fil pour avancer le fil le long d'un trajet de parcours
opérationnel et vers une zone de traitement, et
un accumulateur (1) de fil positionné immédiatement en aval desdits moyens (18, 46)
d'amenée de fil pour stocker temporairement le fil lors d'une rupture de fil ou analogue,
ledit accumulateur (1) de fil comprenant une plaque de déviation (3) ayant des bords
latéraux opposés (5, 6), ladite plaque étant montée globalement de manière transversale
par rapport au trajet de parcours opérationnel et l'un desdits bords latéraux (5)
étant adjacent au trajet de parcours opérationnel, et de sorte que le fil qui avance
n'est pas dévié, de manière significative, par la plaque (3) lors de l'avance le long
du trajet de parcours opérationnel mais le fil qui avance ne vient pas en contact
avec la plaque lors d'une rupture de fil ou analogue, caractérisé en ce que
ledit accumulateur (1) de fil comprend, de plus, un guide (2) de fil disposé sur
le côté dudit trajet de parcours opérationnel de fil à l'opposé dudit bord latéral
particulier de ladite plaque, et de sorte que le trajet de parcours opérationnel de
fil court entre ledit bord latéral de ladite plaque et ledit guide de fil.
2. Appareil selon la revendication 1, dans lequel ladite plaque (3) fait un certain angle
le long d'une ligne de sommets (7) pour définir deux segments (8, 9) de plaque qui
sont inclinés l'un par rapport à l'autre, et la ligne de sommets (7) s'étendant vers
ledit guide de fil quand on regarde dans le sens d'avance du fil.
3. Appareil selon la revendication 2, dans lequel la plaque de déviation (3) est revêtue
par une matière adhésive sur le côté de cette dernière faisant face auxdits moyens
(18, 46) d'amenée de fil.
4. Appareil selon la revendication 1, comprenant de plus un bac (26) de recueillement
de fil positionné au-dessous de ladite plaque de déviation (3) de façon à être conçu
pour recevoir le fil après que le fil est venu en contact avec la plaque de déviation.
5. Appareil selon la revendication 1, dans lequel ledit bord latéral particulier (5)
de ladite plaque (3) est espacé du trajet de parcours opérationnel du fil et de sorte
que le fil qui avance n'est pas dévié par la plaque lors de l'avance le long du trajet
de parcours opérationnel.
6. Appareil selon la revendication 1, dans lequel lesdits moyens (18, 46) d'amenée de
fil définissent un trajet naturel d'amenée de fil le long duquel le fil avance en
l'absence de guidage en aval des moyens de d'amenée, et dans lequel ladite plaque
de déviation (3) est positionnée de façon à couper le trajet naturel d'amenée du fil.
7. Appareil selon la revendication 1, dans lequel lesdits moyens (46) d'amenée de fil
comprennent un rouleau d'alimentation entraîné (46.1) et un rouleau de pression correspondant
(46.2) qui vient en contact avec le rouleau d'alimentation de façon à définir une
tangente commune, et dans lequel ladite plaque de déviation (3) est positionnée le
long de la tangente commune desdits rouleaux.
8. Appareil selon la revendication 1, dans lequel ladite zone de traitement comprend
des moyens de fausse torsion de fil comprenant, dans une disposition en série, un
dispositif de chauffage allongé (20), une plaque de refroidissement allongée (24),
une unité de fausse torsion (28), et des seconds moyens (30) d'amenée de fil.
9. Appareil selon la revendication 1, dans lequel ladite zone de traitement comprend
un appareil d'enroulement (54) de fil pour enrouler le fil qui avance en un enroulement
croisé (50).