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(11) | EP 0 263 797 B1 |
| (12) | EUROPEAN PATENT SPECIFICATION |
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| (54) |
Device for forming windings of yarn and related apparatus for the steaming of yarns Einrichtung zur Bildung von Garnschleifen und dazugehörige Anlage zur Dampfbehandlung von Garn Dispositif pour la formation de boucles de fils et appareil correspondant pour le vaporisage des fils |
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| Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). |
[0001] The present invention relates in general to the treatment of yarn and is particularly concerned with the formation of windings of yarn intended to be subjected to a treatment such as steaming.
[0002] For this purpose, starting with the yarn wound tightly onto a reel or bobbin in a condition in which it cannot be treated, a generally looser winding is formed. The latter is deposited on a transporter, such as a conveyor belt, which carries it into the treatment chamber. The winding of yarn is prepared by winding the yarn to be treated onto a winding core extending in a fixed direction of winding.
[0003] Devices are known in the art for forming windings of yarn, which include a winding core with an input end and an output end and with a rotary head for supplying the yarn which is able to wind the yarn into coils around the input end of the winding core. The winding advances on the core towards its output end due to entrainment by the transporter.
[0004] More specifically, the present invention relates to a winding device having the features set forth with pre-characterising portion of Claim 1, which is known e.a. from DE-A 2 847 291 and DE-A 2 939 716. The object of the present invention is providing such a device, which ensures, in all operating conditions, the regularity of the winding of the yarn onto the core and its gradual advancement towards the output end of the core itself.
[0005] According to the present invention, this object is achieved by virtue of a winding device having the further features set forth in Claim 1.
[0006] The invention also relates to apparatus incorporating a winding device of the type specified above.
[0007] The invention will now be described, purely by way of non-limiting example, with reference to the appended drawings, in which:
Figure 1 shows schematically in longitudinal vertical section the structure of apparatus for the steaming of yarns, produced according to the invention,
Figure 2 is a section taken on the line II-II of Figure 1
Figure 3 is a section taken on the line III-III of Figure 1, on an enlarged scale,
Figure 4 is a view taken on the arrow IV of Figure 3, and
Figure 5 is a longitudinal vertical section substantially similar to Figure 1, which illustrates a possible variant of the apparatus according to the invention.
[0008] In Figures 1 and 2, apparatus usable for subjecting a yarn F to steaming is generally indicated 1. The yarn F is unwound from a supply reel or bobbin B1 to be rewound onto a collecting reel or bobbin B2 after treatment.
[0009] The steaming is carried out by exposing the yarn to the action of the steam which collects in the treatment chamber 2 of the apparatus.
[0010] For this purpose, an elongate winding of generally loose coils of yarn is formed from the yarn F supplied from the bobbin Bi, by means of a device 3 whose structure will be better explained below with reference to Figures 3 and 4, so as to enable good penetration of the steam into the yarn.
[0011] According to a widely known solution, the winding of yarn formed by the device 3 is placed on a transporter device, for example a conveyor belt 4, which advances the winding from an inlet opening 5 to an outlet opening 6 provided in the walls of the chamber 2.
[0012] The upper pass of the conveyor 4 which receives the yarn is supported by rollers or pulleys arranged in such a way as to give the pass a profile in which an initial ascending section (in the direction of advance of the yarn), a central approximately horizontal section, and a final descending section can be distinguished.
[0013] At the outlet from the treatment chamber 2, which is generally prismatic in shape, the winding of yarn is passed over a ve ntilator device 7 operated by a suction element 8, in order to cool the yarn before it is rewound onto the collecting reel or bobbin 82.
[0014] As better seen in the section of Figure 2, the apparatus 1 may in fact include one or more transporter devices 4 (in the example illustrated, ten) each of which advances a winding of yarn formed by a device of the type indicated 3 in Figures 3 and 4 into the chamber 2.
[0015] The heating in the chamber 2 and the diffusion of the steam within the chamber is effected through a steam distribution duct 9 (connected to a source of steam, not illustrated in the drawings) including a main branch 10 and a secondary branch 12. The main branch 10 extends near (and preferably over) the upper wall or head 11 of the chamber 2, while the secondary duct 12 conveys the steam towards a grid or coil 13 which extends within the chamber 2 in its base region, which is completely open or at any rate provided with apertures, in a position below the transporters 4.
[0016] The steaming chamber 2 is surrounded by an outer casing 14 of thermally insulating material. The steam supplied by the main duct 10 emerges through holes 15 provided in the duct and diffuses into the space between the upper wall 11 of the chamber 2 and the casing 14 of insulating material, heating the chamber 2 from its upper wall 11. Subsequently, the steam issuing from the main duct 10 is propagated downwardly inside the casing 14 and enters the steaming chamber 2 from the bottom. The vapour from the duct 10 thus penetrates the chamber 2 from its (open or at any rate apertured) base region where the coil 13 is situated so as to be able to give up heat to the steam supplied to the chamber 2, to prevent the temperature of this steam falling below predetermined values.
[0017] Since the chamber 2 is heated from its top wall 11, using steam which is only subsequently introduced into the chamber 2 itself, the upper wall 11 is certain to remain at a temperature which is even a little higher than the temperature in the chamber 2. In this way, condensation of the steam on the wall 11 and consequent dripping of any condensate formed onto the yarn F which is being treated is completely avoided.
[0018] In Figure 3, a motor, for example an electric motor, is indicated 16 and is provided with a shaft 17 which is traversed by a longitudinal cavity 18 at least in its portion extending within the motor 16 itself. A screw 19 including a core 20 and at least one thread 21 is mounted on the free end of the shaft 17, that is, the end opposite the body of the motor 16.
[0019] A rotary head, indicated 22, has a generally bell- shaped configuration with an apex part rigidly keyed to the shaft 17 and a circular end edge 22a extending in a plane perpendicular to the axis of the shaft 17, in substantial alignment with the free end of the shaft 17.
[0020] The bell 22 is traversed by a cavity 23 which extends along one of the "generatrices" of the bell and is connected in the region of the angle 24 with the cavity 18 of the shaft 17.
[0021] At the opposite end, that is, at the free end of the head 22, the cavity 23 has an opening 25 facing the screw 19.
[0022] The cavity 18 and the cavity 23 together define a duct for feeding a yarn F towards the opening 25. The yarn F is introduced, usually by pneumatic means, into the cavity 18 from the rear of the motor 16, that is, the end opposite the bell 22. The yarn passes into the cavity 23 and from the latter towards the opening 25, advancing continuously through the cavities 18 and 23 due to the rotation of the bell 22 caused by the operation of the motor 16.
[0023] Two lining sleeves of ceramic material are indicated 26 and have the function of preventing the yarn from wearing grooves in the material (usually metal) of the shaft 17 and the bell 22, in the regions of the angle 24 and the opening 25, as it advances rapidly (600-1000 m/min) within the cavities 18 and 23.
[0024] Since the head 22 must be rotated at high speed in order to ensure the speed of advance indicated, a further cavity 23a which is completely identical to and symmetrical with the cavity 23 (baricentrically symmetrical) is provided in the head 22. Thus, the head 22 is prevented from becoming unbalanced and oscillating or vibrating during rotation.
[0025] A fork element is generally indicated 27 and is arranged to act as a core for the winding of the yarn F.
[0026] The fork element 27 is constituted by a base part 28 which is generally sleeve-shaped, and two arms or prongs 29 which extend from the sleeve 28.
[0027] The sleeve 28 is fitted onto the shaft 17 in an intermediate position between the base part of the bell head 22 and the end on which the screw 19 is mounted, with the interposition of bearings 28a which allow the sleeve 28 and the fork 27 to rotate freely together relative to the shaft 17, that is, not to be forced to rotate when the shaft 17 rotates due to the operation of the motor 16.
[0028] As can be seen in Figure 3, in the final assembled arrangement, the two arms or prongs 29 of the fork 27 extend from the sleeve 28 away from the bell head 22.
[0029] Each arm 29 has an upstream or input end 30a situated in correspondence with the free end of the bell 22a and the screw 19, and a respective free or output end 30b.
[0030] In general, the two arms 29 are located in symmetrical positions relative to the axis of the shaft 17, which coincides with the axis of symmetry and rotation of the screw 19.
[0031] The yarn which emerges from the aperture 21 is wound onto the two arms 29 of the core 27, as better illustrated in the sectional view of Figure 4.
[0032] The bell head 22 is in fact rotated by the shaft 17 of the motor, while the winding core 27 is kept in a fixed position (by means which will be better explained below).
[0033] Consequently, the yarn is wound onto the core 27 to form coils of which two opposite portions Si, S2 are discernible and which extend freely between the two arms 29. The free portions of each coil S1, S2 also rest on the core 20 of the screw 19 and are thus exposed to the entrainment action exerted by the thread 21, the sense of which is selected so as to cause the forced advance of the coils which are gradually formed on the core 27 from the input end 30a towards the free or output end 30b of the arms.
[0034] In this way, a winding of yarn F is formed which may be deposited on the upper pass of the conveyor 4 to be advanced subsequently into the steaming chamber 2.
[0035] The input end of the conveyor 4, constituted by a roller or pulley 31 for driving the conveyor belt, is brought into contact with the winding core 27 immediately downstream of the region in which the screw 19 acts as a positive driving element.
[0036] The wheel or pulley 31 is preferably mounted on a support apparatus 32 (Figure 1) which is kept resiliently (or at any rate so that its position can be varied) in contact with the lower face of the winding core 27.
[0037] The fact that the core 27 is, so to speak, resting on the wheel or roller 31 ensures that the core remains securely in a fixed position and is not thus rotated by the shaft 17 due to friction. At the same time, the fact that the position of the wheel or roller 31 is adjustable (for example, with a resilient mounting schematically illustrated here by a spring 33) enables this position to be adapted precisely to the variations in diameter (count) of the yarn which is being wound.
[0038] In the embodiment illustrated in the drawings, the arms 29 of the winding core 7 converge slightly. In this way, it is possible to allow for any shrinkage of the yarn which may occur immediately after the winding has been formed.
[0039] In this connection, a solution can also be envisaged in which the conveyor belt 4 is eliminated, while the arms 29 of the core 27 and the screw 19 are lengthened so as to act as elements for guiding and transporting the winding of yarn which advances into a chamber for steaming or treatment generally. In this case, the diametral dimensions and the relative positions (convergence) of the arms 29 of the winding core 27 could be selected so as to allow exactly for the shrinkage of the yarn due to the treatment. For the purpose of this possible configuration of use, the use is envisaged (and therefore fully encompassed by the scope of the present invention) of winding cores 27 in which the positions and/or the inclinations of the arms 29 relative to the sleeve 28 are selectively variable and adjustable (by means of screws).
[0040] The use may also be envisaged of a screw 19 having a core 20 and/or threading 21 generally tapered away from the input end 30 of the winding core 27. Moreover, as regards the general configuration of this core, solutions may be used which are of different types from those illustrated in the drawings but which still provide for at least one free portion of the coils of yarn to be subjected to the driving action of the screw 19.
[0041] As far as the general configuration of the apparatus 1 is concerned, the Applicant has been able to observe that with some types of yarn, such as so- called "single filament", that is non-multiple, yarns, the solution illustrated in Figure 1 may sometimes give rise to phenomena of curling and knot formation. These phenomena inhibit the subsequent operation of rewinding the steamed yarn onto the collecting bobbin.
[0042] These problems are, however, completely eliminated if, according to the solution illustrated in Figure 5, the winding of yarn to be steamed is formed inside the steaming chamber. This may be achieved by inserting the device or winding head 3 within the inlet opening 5 of the steaming chamber 2, so that the winding of yarn F to be steamed is formed inside the chamber 2, not outside as in the solutions according to Figure 1.
[0043] At the outlet of the chamber 2, the winding of yarn is passed over the ventilation device 7 operated by the suction element 8, in order to cool the yarn before it is rewound onto the collection reel or bobbin B2.
[0044] According to the solution already described in detail with reference to Figure 1, the heating of the chamber 2 and the diffusion of the steam within the chamber is effected through the steam distribution duct 9 with its main branch 10 which extends near the upper wall or head of the chamber 2, and its secondary duct 12 which conveys the steam towards the grating or coil 13 extending in the bottom of the steaming chamber.
[0045] According to an advantageous improvement, a shaped cover 60 is associated with the outlet opening 6 of the chamber 2 and extends like a roof above the outlet opening 6 towards the outside of the steaming chamber 2. The function of the cover 60 is to protect against the escape of steam from the steaming chamber.
[0046] The return pass of the conveyor belt 4 extends beneath the steaming chamber 2 and re-enters the steaming chamber 2 through an opening 50 provided in the base wall of the chamber in the region immediately below the inlet opening 5 in which the winding device 3 is inserted.
[0047] As in the case of Figure 1, the device 3 is substantially constituted by a winding core 27 including two converging arms on which the yarn F is wound in coils due to the rotation of the head 22 driven by the hollow shaft 17 through which the yarn F, unwound from the reel or bobbin Bi, enters the device 3. The winding of yarn formed by the rotation of the head 22 is advanced along the arms of the winding core 27 by the screw 19 which is also driven by the shaft 17.
1. A winding device for forming windings of yarn, comprising a winding core (27) having
an input end (30a) and an output end (30b), and a rotary head (22) for supplying the
yarn (F) and for winding the yarn (F) in coils around the input end (30a) of the winding
core (27), wherein:
- the winding core (27) includes at least two arms (29), between which at least one free portion (Si, S2) of each coil of yarn (F) can extend, and
- screw entrainment means are provided which extend between the at least two arms (29) of the winding core (27) from the input end (30a) and are able to cooperate with at least one free portion (S1, S2) of the coils of yarn, for entrainment thereof, to cause the advance of the yarn (F) wound on the core (27) towards the output end (30b), characterised in that the winding core (27) includes two arms (29) which are side by side so that each coil of yarn (F) includes two opposite free portions (Si, S2), and in that at least one motorised entrainment screw (19, 16) is provided which is interposed between the adjacent arms (29) and is coextensive therewith, the screw (19) being provided with an external thread (21) for cooperating with both the two opposite free portions (Sl, S2) of the coils of yarn (F).
2. A device according to Claim 1 characterised in that it includes a motor (16) with
a common shaft (17) for driving the rotary head (22) and the screw means (19), in
that the screw means (19) are arranged at one end of the shaft (17), while the rotary
head (22) is keyed to the shaft (17) and has a general bell shape which diverges towards
the end of the shaft (17), and in that the shaft (17) is at least partially traversed
by a longitudinal cavity (18) for supplying the yarn (F) towards the rotary head (22).
3. A device according to Claim 2 characterised in that the rotary head (22) has a
peripheral opening (25) for supplying the yarn (F) towards the winding core (27),
a first respective cavity (23) for the passage of the yarn (F) from the longitudinal
cavity (18) of the shaft towards the peripheral opening (25), and a second respective
cavity (23a) baricentrically symmetrical with the first cavity (23).
4. A device according to Claim 2 or Claim 3, characterised in that:
- the winding core (27) is generally fork-shaped with a base part (28) which is freely rotatable (28a) on the common drive shaft (17) in an intermediate position between the rotary head (22) and the screw means (19), and
- a device (4) is provided for transporting the yarn (F) wound on the core (27), which is able to cooperate with the core (27) in a relationship of relative support so as to prevent the core (27) from being rotated by the shaft (17).
5. A device according to Claim 4 characterised in that the transporter device (4)
carries associated adjustment elements (31, 32, 33) for selectively varying the relationship
of relative support between the transporter device (4) and the winding core (27).
6. Apparatus for steaming and winding of yarn (F), comprising a winding device (3)
according to any of Claims 1 to 5, characterised in that it further comprises: a steaming
chamber (2) with an upper wall (11), an inlet opening (5) and an outlet opening (6)
for the yarn (F), transporter means (4) for transferring the yarn from the inlet opening
(5) to the outlet opening (6) through the steaming chamber (2), main steam heating
means (10) acting on the upper wall (11), and steam conveying means (14) for transferring
the steam from the main heating means (10) into the steaming chamber (2).
7. Apparatus for steaming a winding of yarn, comprising, a winding device (3) according
to any of Claims 1 to 5 which is able to form a generally loose winding of yarn to
be steamed characteried in that it further comprises a steaming chamber (2) with an
inlet opening (5) and an outlet opening (6) for the yarn, and in that the winding
device (3) is inserted in the inlet opening (5) so that the winding of yarn is formed
inside the steaming chamber (2).
8. Apparatus according to Claim 6 or Claim 7, characterised in that a shaped cover
(60) is associated with the outlet opening (6) and extends outwardly of the steaming
chamber (2) to act as protection against the escape of steam from the chamber (2).
9. Apparatus according to any one of Claims 6 to 8, characterised in that a closed
loop conveyor belt (4) is provided for transporting the yarn (F) from the inlet opening
(5) to the outlet opening (6), and in that a further opening (50) is provided for
the belt (4) to enter the steaming chamber (2), situated in a generally lower position
than the winding device (3).
10. Apparatus according to any of Claims 6-9 characterised in that it includes a common
driving shaft (17) for the rotary head (22) and the screw means (19), and a motor
(16) for driving the common shaft (17) arranged in a position generally out of alignment
with the common shaft (17).
1. Haspeleinrichtung zur Bildung von Garnschleifen, die einen Wicklungskern (27),
der ein Eingangsende (30a) und ein Ausgangsende (30b) hat, und einen rotierenden Kopf
(22) zum Zufuhren des Garns (F) und zum Winden des Garns (F) in Windungen um das Eingangsende
(30a) des Wicklungskernes (27) aufweist, worin:
- der Wicklungskern (27) mindestens zwei Arme (29) aufweist, zwischen denen sich mindestens ein freier Teil (Si, S2) einer jeden Windung des Garns (F) erstrecken kann, und
- Schrauben-Mitschlepp-Einrichtungen vorgesehen sind, die sich zwischen den mindestens zwei Armen (29) des Wicklungskerns (27) von dem Eingangsende (30a) erstrecken und in der Lage sind, mit mindestens einem freien Teil (S1, S2) der Garnwindungen zum Mitschleppen von ihnen zusammenzuwirken, um den Vorschub des auf den Kern (27) aufgewickelten Garnes (F) in Richtung auf das Ausgangsende (30b) zu bewirken, dadurch gekennzeichnet, daß der Wicklungskern (27) zwei Arme (29) aufweist, die Seite an Seite sind, so daß jede Windung des Garns (F) zwei gegenüberliegende freie Teile (S1, S2) aufweist, und daß mindestens eine motorgetriebene Mitschleppschraube (19, 16) vorgesehen ist, die zwischen den benachbarten Armen (29) angeordnet ist und sich zusammen damit erstreckt, wobei die Schraube (19) mit einem Außengewinde (21) zum Zusammenwirken mit den beiden gegenüberliegenden freien Teilen (S1, S2) der Windungen des Garns (F) versehen ist.
2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sie einen Motor (16) mit
einer gemeinsamen Achse (17) zum Antreiben des rotierenden Kopfes (22) und der Schraubeneinrichtungen
(19) aufweist, daß die Schraubeneinrichtungen (19) an einem Ende der Achse (17) angeordnet
sind, während der rotierende Kopf (22) mit dem Schaft (17) verkeilt ist und eine im
allgemeinen glockenförmige Form hat, die in Richtung auf das Ende der Achse (17) divergiert,
und daß die Achse (17) zumindest teilweise durch eine längliche Höhlung (18) zum Zuführen
des Garns (F) in Richtung auf den rotierenden Kopf (22) durchsetzt ist.
3. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der rotierende Kopf (22)
eine periphere Öffnung (25) zum Zuführen des Garns (F) in Richtung auf den Wicklungskern
(27), eine erste entsprechende Höhlung (23) für den Durchgang des Garns (F) von der
Längshöhlung (18) der Achse in Richtung auf die periphere Öffnung (25) und eine zweite
entsprechende Höhlung (23a) aufweist, die axialsymmetrisch mit der ersten Höhlung
(23) ist.
4. Einrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß
- der Wicklungskern (27) im allgemeinen gabelförmig ist mit einem Basisteil (28), der frei rotierbar (28a) auf der gemeinsamen Antriebsachse (17) in einer Zwischenposition zwischen dem rotierenden Kopf (22) und den Schraubeneinrichtungen (19) ist, und
- eine Einrichtung (4) vorgesehen ist zum Transportieren des auf den Kern (27) aufgewickelten Garns (F), die in der Lage ist, mit dem Kern (27) in einer Beziehung der relativen Unterstützung so zusammenzuwirken, daß verhindert wird, daß der Kern (27) durch die Achse (17) gedreht wird.
5. Einrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Transporteinrichtung
(4) zugeordnete Einstellelemente (31, 32, 33) trägt zum wahlweisen Variieren der Beziehung
der relativen Unterstützung zwischen der Transporteinrichtung (4) und dem Wicklungskern
(27).
6. Vorrichtung zur Dampfbehandlung und Schleifenbildung von Garn (F), die eine Haspeleinrichtung
(3) nach einem der Ansprüche 1 bis 5 aufweist, dadurch gekennzeichnet, daß sie weiterhin
aufweist: Eine Dampfbehandlungskammer (2) mit einer oberen Wand (11), einer Einlaßöffnung
(5) und einer Auslaßöffnung (6) für das Garn (F), eine Transporteinrichtung (4) zum
Transportieren des Garns von der Einlaßöffnung (5) zu der Auslaßöffnung (6) durch
die Dampfbehandlungskammer (2), eine Haupt-Dampfheizeinrichtung (10), die auf die
obere Wand (11) wirkt, und eine Dampfbeförderungseinrichtung (14) zum Transportieren
des Dampfes von der Haupt-Heizeinrichtung (10) in die Dampfbehandlungskammer (2).
7. Vorrichtung zur Dampfbehandlung einer Garnschleife, die eine Haspeleinrichtung
(3) nach einem der Ansprüche 1 bis 5 aufweist, die in der Lage ist, eine im allgemeinen
lose Wicklung von mit Dampf zu behandelndem Garn zu bilden, dadurch gekennzeichnet,
daß sie weiterhin eine Dampfbehandlungskammer (2) mit einer Einlaßöffnung (5) und
einer Auslaßöffnung (6) für das Garn aufweist und daß die Haspeleinrichtung (3) in
die Einlaßöffnung (5) eingefügt ist, so daß die Garnschleife innerhalb der Dampfbehandlungskammer
(2) gebildet wird.
8. Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß eine geformte Abdeckung
(60) der Auslaßöffnung (6) zugeordnet ist und sich außerhalb der Dampfbehandlungskammer
(2) erstreckt, um als Schutz gegen das Entweichen von Dampf von der Kammer (2) zu
wirken.
9. Vorrichtung nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß ein Beförderungsband
(4) mit geschlossener Schleife vorgesehen ist zum Transportieren des Garns (F) von
der Einlaßöffnung (5) zu der Auslaßöffnung (6) und daß eine weitere Öffnung (50) vorgesehen
ist, damit das Band (4) in die Dampfbehandlungskammer (2) eintreten kann, die in einer
im allgemeinen niedrigeren Position als die Haspeleinrichtung (3) angeordnet ist.
10. Vorrichtung nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß sie
eine gemeinsame Antriebsachse (17) für den rotierenden Kopf (22) und die Schraubeneinrichtungen
(19) und einen Motor (16) zum Antreiben der gemeinsamen Achse (17) aufweist, der in
einer Position angeordnet ist, die im allgemeinen außerhalb der Ausrichtung mit der
gemeinsamen Achse (17) ist.
1. Dispositif d'enroulement pour la formation d'enroulements de fil, comprenant un
noyau d'enroulement (27) ayant une extrémité d'entrée (30a) et une extrémité de sortie
(30b), et une tête rotative (22) pour délivrer le fil (F) et pour enrouler le fil
(F) en bobines autour de l'extrémité d'entrée (30a) du noyau d'enroulement (27), dans
lequel:
- le noyau d'enroulement (27) comprend au moins deux bras (29), entre lesquels au moins une partie libre (Si, S2) de chaque bobine de fil (F) peut s'étendre, et
- des moyens d'entraînement à vis sont prévus qui s'étendent entre au moins les deux bras (29) du noyau d'enroulement (27) depuis l'extrémité d'entrée (30a) et peuvent coopérer avec au moins une partie libre (S1, S2) des bobines de fil, pour entraîner celles-ci, afin de faire avancer le fil (F) enroulé sur le noyau (27) vers l'extrémité de sortie (30b), caractérisé en ce que le noyau d'enroulement (27) comprend deux bras (29) qui sont disposés côte à côte de sorte que chaque bobine de fil (F) comprend deux parties libres opposées (S1, S2), et en ce qu'au moins une vis d'entraînement mécanique (19, 16) est prévue qui est placée entre les bras adjacents (29) et s'étend le long de ceux-ci, la vis (19) étant munie d'un filet extérieur (21) pour coopérer avec les deux parties libres opposées (Si, S2) des bobines de fil (F).
2. Dispositif selon la revendication 1, caractérisé en ce qu'il comprend un moteur
(16) avec un arbre commun (17) pour entraîner la tête rotative (22) et les moyens
à vis (19), en ce que les moyens à vis (19) sont disposés à une extrémité de l'arbre
(17), alors que la tête rotative (22) est clavetée à l'arbre (17) et a une forme générale
de cloche qui diverge vers l'extrémité de l'arbre (17), et en ce que l'arbre (17)
est au moins partiellement traversé par une cavité longitudinale (18) pour amener
le fil (F) vers la tête rotative (22).
3. Dispositif selon la revendication 2, caractérisé en ce que la tête rotative (22)
a une ouverture périphérique (25) pour amener le fil (F) vers le noyau d'enroulement
(27), une première cavité respective (23) pour le passage du fil (F) depuis la cavité
longitudinale (18) de l'arbre vers l'ouverture périphérique (25), et une seconde cavité
respective (23a) symétrique de façon barycentrique à la première cavité (23).
4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que:
- le noyau d'enroulement (27) a une forme générale de fourchette avec une partie de base (28) qui peut tourner librement (28a) sur l'arbre moteur commun (17) dans une position intermédiaire entre la tête rotative (22) et les moyens à vis (19), et
- un dispositif (4) est prévu pour transporter le fil (F) enroulé sur le noyau (27), qui peut coopérer avec le noyau (27) dans une relation de support relatif de manière à empêcher le noyau (27) d'être mis en rotation par l'arbre (17).
5. Dispositif selon la revendication 4, caractérisé en ce que le dispositif transporteur
(4) porte des éléments de réglage associés (31, 32, 33) pour faire varier sélectivement
la relation de support relatif entre le dispositif transporteur (4) et le noyau d'enroulement
(27).
6. Appareil pour le vaporisage et l'enroulement de fil (F), comprenant un dispositif
d'enroulement (3) selon l'une quelconque des revendications 1 à 5, caractérisé en
ce qu'il comprend en outre une chambre de vaporisage (2) avec une paroi supérieure
(11 une ouverture d'entrée (5) et une ouverture de sortie (6) pour le fil (F), un
moyen transporteur (4) pour transférer le fil depuis l'ouverture d'entrée (5) à l'ouverture
de sortie (6) par la chambre de vaporisage (2), un moyen de chauffage principal à
la vapeur (10) agissant sur la paroi supérieure (11), et un moyen transporteur de
vapeur (14) pour transférer la vapeur depuis le moyen de chauffage principal (10)
dans la chambre de vaporisage (2).
7. Dispositif pour le vaporisage d'un enroulement de fil, comprenant un dispositif
d'enroulement (3) se-Ion l'une quelconque des revendications 1 à 5, qui peut former
un enroulement généralement lâche de fil destiné à être vaporisé, caractérisé en ce
qu'il comprend en outre une chambre de vaporisage (2) avec une ouverture d'entrée
(5) et une ouverture de sortie (6) pour le fil, et en ce que le dispositif d'enroulement
(3) est inséré dans l'ouverture d'entrée (5) de sorte que l'enroulement de fil est
formé à l'intérieur de la chambre de vaporisage (2).
8. Appareil selon la revendication 6 ou 7, caractérisé en ce qu'un couvercle façonné
(60) est associé à l'ouverture de sortie (6) et s'étend vers l'extérieur de la chambre
de vaporisage (2) pour servir de protection contre l'echappement de vapeur hors de
la chambre (2).
9. Appareil selon l'une quelconque des revendications 6 à 8, caractérisé en ce qu'une
bande de transport à boucle fermée (4) est prévue pour transporter le fil (F) depuis
l'ouverture d'entrée (5) vers l'ouverture de sortie (6), et en ce qu'une ouverture
supplémentaire (50) est prévue pour que la bande (4) entre dans la chambre de vaporisage
(2), située dans une position généralement plus basse que le dispositif d'enroulement
(3).
10. Appareil selon l'une quelconque des revendications 6 à 9, caractérisé en ce qu'il
comprend un arbre moteur commun (17) pour la tête rotative (22) et les moyens à vis
(19), et un moteur (16) pour entraîner l'arbre commun (17) disposé dans une position
généralement non alignée avec l'arbre commun (17).