FR2458608A1 - METHOD AND APPARATUS FOR OBTAINING REBOUND WAFFLED TEXTURE - Google Patents

Abstract

PERFECTED PROCESS AND APPARATUS FOR TEXTURING BY REBOUND EMBOSSING OF THERMOPLASTIC WIRE. A SINGLE CONTROL SYSTEM 10, 12, 14, 15, 16 IS PROVIDED TO FACILITATE OPERATION, WITHOUT WIRE ACCUMULATOR 1, SO THAT THE LATEST KITS FROM THE REBOUND EMBOSSING DEVICE 6 IN A PRACTICALLY RELAXED STATE; A 10A, 10B OR 10C, 10D PHOTOELECTRIC CELL DEVICE IS PLACED IN A 9 J-BENDED TUBE IN WHICH THE WAFFLE 1 WIRE THROUGH THE TRAJECTORY, LOWERING OR RAISING WITH RESPECT TO THE CELL, OCCULT OR FREE. THIS FOLLOWS THE WIRE TENSION AND THUS CONTROLS THE CONTROL DEVICE 17 WHICH IN TURN ACTS ON THE WINDING DEVICE 15, 16 TO INCREASE OR REDUCE THE WIRE WINDING RATE, WHICH ELIMINATES THE RISK OF STACKING AND ENCLOSURE; APPLICATION TO THE MANUFACTURE OF SINGLE OR COMPOUND THERMOPLASTIC WIRES WITH PERMANENT EMBOSSING.

Description

- 2458608

  An improved method and apparatus for producing embossed or bounce-loop textured yarn. Another

  aspect of the invention relates to a process without accumulator for

  sea a looped or embossed yarn, as well as a device in the-

  which one detects the relative tension of the wire and one regulates the tension

  the wire to prevent entanglement of the wire and

embossing of it.

  Materials are made to obtain thermoplastic yarn

  synthetic material in the form of a number of continuous filaments,

  tiline and smooth. These wires have a low volume or mass, and their

  usefulness in textile applications is therefore rather

  moth-eaten. To increase the volume and texture of the synthetic yarns, a certain range of deformation methods, such as looping or embossing, have already been proposed. A commonly adopted technique for

  Thermoplastic yarns consists of bending wire filaments and heating

  iron it while the filaments are held in their bent, embossed or curly form. This method is most often called "false twist texturing". Another type of texturing is the

  fluidized texturing, for example as described in US Pat.

Cain No. 2,869,967.

  Another particularly satisfactory technical process for obtaining a high volume yarn is known as "rebound embossing". Rebound embossing

  involves the projection of the wire, propelled by a heated fluid through

  to a nozzle, in the form of a continuous flow of current against a perforated surface that hits the wire and on which the wire bounces instantly. The shock of the wire against this perforated surface produces the deformation of the wire by looping or embossing the individual filaments of the wire, while the heated fluid passes through the surface

  perforated. The thread thus textured continues its trajectory in the state

  of and deviates substantially by inertia, due to the rebound, of the embossing zone; in the process according to the prior art, this wire is then guided to lead to a collector station where the wire is heated then,

  -35 cooled to make the embossing thermally permanent before ef-

  wind it on a spindle or reel.

  A thermoplastic textured yarn by the rebound embossing method, briefly discussed above, has, among other properties,

  exceptional recovery capacity and extreme resilience

  high; we can refer in this regard to the American patent no

3,686,848.

  The basic method and apparatus for implementing the rebound embossing process is described by Clarkson in US Pat. No. 3,665,567. Briefly, this Clarkson process involves introducing a wire into a thin tube at the same time. using a jet of steam, and project the wire longitudinally against a perforated screen, which produces the random embossing of the wire and its rebound also randomly. This gives the embossing or "texturing" of the wire that bounces freely and laterally through

  a passage where it falls on a receiver that ensures its fixation

  manent by thermal effect. The steam passes almost entirely

  the perforated screen before being recovered.

  Although the above recalled process of rebound embossing

  to obtain a particularly interesting product, it

  bears certain sensitive points. So, to properly perform the

  rebound embossing, it is essential that the yarn bounces away from

  screen and is almost relaxed when it is

  cuation out of the embossing device by rebound. It is not possible

  sible to "pull" the wire out of the rebound embossing device, since at this point any tension applied to the wire would result in the drawing, thus the straightening of the embossed parts and could otherwise cause the wire to be deflected to the point of stop him from hitting

the perforated screen.

  Various improvements in methods and apparatus for giving synthetic yarns a rebound embossed texture are described in U.S. Patent Nos. 3,859,696, 3,859,697, and US Pat.

  3,887,971. All the apparatus and methods described in these patents and

  if in US Pat. No. 3,665,567 are characterized by the

  wise of an embossed wire accumulator, of the type comprising a J-shaped bent tube, in which the wire accumulates (or piled) and undergoes heat treatment (curing by the action of heat, followed by cooling). In U.S. Patent No. 3,879,819, the "J" tube is provided with a photoelectric sensor which serves to maintain a constant height (or stack) of wire in the tube.

  by adjusting the winding speed of the wire under the control of this

detector.

  The "Ji" tube accumulator has been used in the prior art.

  to ensure the thermosetting of the embossing of the wire and thus be certain that the wire bounced against the rebound embossing screen is then in the relaxed state, allowing the deformed wire to fall freely into the accumulator constituted by the

  tube in "J". Therefore, this "J" tube was not used

  only for this second purpose. However, during accumulation or

  the stacking of the wire, entanglements have been observed, which

  localized tractions on the wire as it was wound, and consequently stretching, randomly distributed between segments of the wire,

  embossing, and even sometimes breaking the wire. The frequency of these rup-

  has led to an increase in the staff needed to

  or monitor a specific number of texturing machines, and for

reform the wire during breaks.

  In addition, when using low denier yarns (about 500 denier or below), the problem is magnified.

  to such an extent that it becomes impossible to make effective use of

  accumulator systems. This amplification seems to have to be attributed

  the lower the number of deniers, the more

  keys or turns in contact with each other in the accumulator. By con-

  the more there are such contacts, the greater the risk of becoming entangled

  filaments of the different loops between them. This increased contact, which adds to the low specific weight of the loops or turns,

  singularly increases the probability of extraction of loops

  out of the accumulator, so piling and entangling,

And so on.

  The present invention provides a method and apparatus for giving the yarn a rebound embossed texture, characterized in that the yarn emerging from the rebound embossing device is collected without subjecting the yarn to tension in the critical zone (ie to say in

  removing the freshly textured yarn from the embossing device by

  almost relaxed state), by removing the accumula-

  intermediate (or stacking) wire. By removing this accumulation

  intermediate wire, the present invention eliminates at the same time

  the entanglement problems that inevitably accompany the

  cumulation of the wire, which very significantly reduces the rate of breakage

  wire and the formation of localized segments with straightened or

  line, while facilitating the adoption of high scrolling speeds

  of the yarn (for example of the order of 1585 m / nm).

  According to a particular embodiment of the invention,

  this provides a method without accumulator for texturing by gauging

  bounce a synthetic thread; this method comprises the phases of feeding a wire embossing device or

  rebound clade, wherein the yarn is textured by embossing with

  to wind this wire on a rotating winding spindle,

  laterally offset from the embossing device by

  rebound; to detect the degree of tension of the textured yarn at a similar point

  killed between the rebound embossing device and said web pin

  rolling, and to decrease the winding speed of the texture thread as soon as, and as long as, said tension exceeds a determined value, and finally to increase the winding speed of the yarn soon, and as long as, the tension detected is equal or less than

determined value.

  Another possible embodiment of the invention comprises an apparatus for texturing a synthetic yarn by the method of embossing by rebound, which comprises an embossing texturing device

  by rebound; means for feeding this device with a synthetic wire

  tick, a winding means for collecting the textured or embossed yarn, a tension detecting device for detecting the relative tension

  on this wire at a point between the texturizing device

  and said winding means; a means of control connected to the

  positive voltage detector as well as means for controlling the rate of winding of the wire, in order to control the rate of winding of the wire in response to the voltage thus detected, so that the rate of winding of the wire decreases immediately as long as, the tension of the

  wire detected by said voltage detector device exceeds a voltage

  their determined, and increases soon, and as long as, the tension

  detected by said voltage detector device is equal to or less than

  than said determined value.

  Another embodiment of the methods and apparatus of the invention comprises the adaptation of the aforementioned methods and apparatus to the manufacture of composite yarns and fancy yarns. In this case, two or more wires are introduced into the device at

  texture the wire by rebound embossing.

  According to a preferred embodiment of the methods and

  the above-mentioned wires, the relative tension of the wire is detected by measuring its relative stiffness, while in another preferred embodiment

  we operate by measuring the relative "soft" of the wire.

  The invention will now be described in more detail with reference to

  In the attached drawing which shows schematically and as non-limiting examples of the preferred embodiments of the invention, the same numerals and reference symbols relating to similar elements in the different Figures. On the drawing:

  FIG. 1 shows a diagrammatic elevational view of a system

  and a device according to the invention for the treatment of the wire; FIGURE 2 is a sectional view taken along line 2-2 of Figure 1; FIGURE 2h is a section corresponding to Figure 2 but in which the position of the photocell has been modified to detect slack in the wire, and

  FIGURE 3 is a schematic elevational view of an adapter

  of the wire processing system and apparatus of Figure 1

  the manufacture of composite yarns and fancy yarns.

  The present invention is applicable to synthetic yarns

  thermoplastics whose number of deniers makes it possible to

  embossed or looped by rebound. Such synthetic thermo threads

  plastics include, for example, nylon threads, such as

  nylon 66, nylon 6, polyolefin yarns, for example from poly-

  propylene, combined yarns such as those made by a combination of

  nylon and propylene bran, and similar threads. The stretched thread

  feeds the texturing device has for example a number of

  from about 100 to about 5000.

  Reference will now be made to the embodiment shown in FIG. 1, which shows schematically by way of nonlimiting example,

a preferred embodiment.

  The entire wire processing apparatus essentially comprises

  a panel or frame 20 on which are mounted the dif-

  components of the apparatus described later. Thermoplastic yarn

  that non-stretched 1 (eg polypropylene, nylon 66, etc.) is

  from a supply or a bundle of yarn (not shown) for feeding

  ter a first roller 3 in the form of bucket associated with a separator roller 2 whose axis forms a certain angle with respect to the axis of the roller 3;

  the wire then leads to a second roller 5 in the form of a bucket, also

  provided with a separator roller 4 disposed obliquely with respect to the roller 5. The bucket rollers 3 and 5 can be heated. The oblique rollers 4 and 5 advance the threads at a substantially higher speed

  higher than that produced by rollers 2 and 3, which ensures the

  rage of the thread. For example, if nylon 66 is used, the rollers 4 and 5 will be driven at a peripheral speed located between 3 and 3.6 times that of the rollers 2 and 3, which produces a stretching of about 3 to 3.6 times nylon thread 66. Still in the hypothesis

  nylon 66 is used, the godet-shaped rollers 3 and 5 se-

  will be operated while their temperature is between 1350 and 163OC approximately. If polypropylene is used, the rollers 4 and 5 will be driven at a rate between about 2.7 and 3.1 times that of the rollers 2 and 3, resulting in a draw of about 2.7 to 3, 1 of the polypropylene wire, while the rollers 3 and 5 in the form of a bucket

  will operate at temperatures between 1050 and 1350C.

  The yarn leaving the oblique roller 4 is then directed towards the embossing device 6 by rebound embossing, essentially

  at a speed of between 915 and 1525 m / min.

  A fluid, for example steam or heated air, feeds

  The embossing device 6 passes through a pipe 7. In the rebound embossing device, the use of a jet of fluid has the effect of throwing the wire against a screen (not shown) placed inside the jet. texturing. From there, the wire bounces and exits the device through a discharge tube 8 in the substantially relaxed state. The yarn 1 leaves the outlet tube 8 of the rebound embossing device 6 at a speed of about 5 to about 15% less than that of the feed, due to the shortening of the yarn resulting from the embossing and compaction produced between the loops. adjacent, and it is finally collected on the winding spool 16 at an overall average speed of about 5 to 10% less than the speed

  because of the embossing it retains (despite

  appreciable reduction of compaction between loops).

  The present invention does not change the operation of the rebound embossing device; therefore, this device

  can be used as custom. Adequate devices of text-

  Rebound embossing and their mode of operation are described, for example, in U.S. Patents Nos. 3,859,696, 3,859,697, 3,878,819 and 3,887,971, to which reference should be made.

  for further understanding of this mode of operation.

  The wire 1 exits the evacuation tube 8 in a freely compacted state, and at this moment its diameter corresponds substantially to the

  inner diameter of this evacuation tube 8, or approaches it.

  Then, the wire 1 falls into the "J" shaped tube 9 which guides it so as to make it pass through the detector device 10. No accumulation of wire occurs inside this tube 9 and

  its use is merely an adaptation of conventional equipment

  tives. Therefore, it would be possible to use other guiding means either as a replacement or in addition to this tube-shaped

  "J", for example crazy rollers and / or guide plates. In-

  This J-tube can be equipped with idle rollers or idler pulleys to minimize the friction of the wire with the walls of the tube.

  Thread 1 leaves the J-tube and then passes around the

  folks 11 and through an electromagnetic tensioner 12 of the disc type, then around a idler roller 13 and a compensation roller 14a carried by an articulated arm 14, before being finally wound on

  a spindle or spool 16 driven by a motor roller 15.

  If we refer to Figure 2, we see that the device

  voltage detector comprises a combined transmitter and receiver device

  tor light loa associated with a reflective surface lob slight-

  inclined, the whole being placed inside the tube 9 in J, at points approximately diametrically opposite, on both sides and substantially above the lower part of the path of the wire 1, shown in FIG. a substantially enlarged scale to facilitate understanding. (The term "bottom trajectory" as used herein refers in essence to the path that the wire would normally follow when wound at speeds about 5 to 15% below that at which the wire - or the core of the wire in case of fancy yarn feeds the embossing device by rebound). As the tension of the yarn 1 increases, the yarn becomes taut and the trajectory of the yarn 1 rises until it obscures the reflected light beam towards the receiver or light detector cell. When no light beam hits the loa cell, the light-sensitive device operates a control circuit 17 (Figure 1) which reduces the rate or winding speed of the wire 1 on the coil 16; so, for example, one can

  obtain this result by directly reducing the speed of the roller of

  15, or by activating the electromagnetic disk tensioner 12. This decreases the stiffness of the wire 1 and lowers the trajectory of the wire

  1 until it no longer prevents the reception of light by

  light detector 10a. As soon as the light strikes again

  loa, the latter in turn operates the controller 17 to increase

  Maintain the winding speed, which increases the tension, and therefore the stiffness of the thread, and raises the trajectory thereof until it obscures again the light ray which then stops striking the detector 10a, which repeats the cycle described above. Therefore, a steady state is rarely reached and in general there is more or less constant cycling (increase and decrease) in wire winding speed. Referring back to FIG. 1, there are two distinct ways of controlling the winding speed of the wire, although in reality and preferably only one of these winding control means will be used in current practice. In the first method, the controller 17 directly controls the speed of the roller

  15, for example by using a conventional motor with

  continuous flow and a speed control relay. The driving engine

  of the roller oscillates between a high speed and a slow speed according to the command provided by the controller 17. In real service, it rarely, if ever, reaches the speed limits, high

  or low, because the control is quickly changed depending on whether the

  Photoelectric lule is occulted or discovered. The actual speed settings will vary according to the particular composition of the wire and its denier number, but one can use for example a fast speed setting of about 610 to 1524 m / min and a speed-slow adjustment of about 427 to 1372 m / min. The speed variation produced between the high and low settings will depend on the particular system

  adopted and the speed of response desired.

  In the second control system shown in Figure 2, one can also control the winding speed of the wire through an assembly comprising a disk electromagnetic tensioner and a compensating arm. (The balancer system is a conventional method of varying the winding speed of the wire). In the system proposed here, when the wire 1 obscures the light beam from the source / light receiver device loa, it activates the controller 17 which in turn activates the electromagnetic disk tensioner 12 so that a disk 12a exerts a slight light. pressure on the wire 1, which increases the voltage produced on the wire 1 between the tensioner 12 and the winding coil 16. As a result, the compensating arm 14 rotates about the pivot axis 14b in the clockwise direction, looking at Figure 1, so as to increase the winding speed and ultimately lower the path of the wire 1 so

  to suppress the occultation of the light ray by this thread. Way to-

  light detector thus neutralizes the controller 17 which

  in turn tralise the electromagnetic tensioner 12 disc, with the end result of the reduction of the tension of the wire which acts on the arm

  o compensator 14. The spring 14c can thus recall the compensating arm

  14 counter-clockwise, always looking at Figure 1, which decreases the winding speed, until wire 1

  cut the light beam again from source 1oa,

  to repeat the cycle. When it is desired to adopt the type of engine control which has been explained above, it is possible to neutralize the tensioner 12 and fix the position of the compensating arm 14 so that it does not modify the winding speed of the wire and do not intervene In QWPtGU Cir LLrstLr / StleXle of ontr8le yh! 1-- lx g- Ls "

iM .- & -.

  The relative strength of this lateral component increases and decreases, respectively, as the tension of the yarn increases and decreases.

  Apparatus according to claim 9, characterized

  characterized in that the yarn tension detecting means (10) comprises a light source (10c) for projecting a sequence ray to increase the winding speed of the yarn 1. As soon as the lod sensor receives the light again, the controller 17 (Figure 1)

  is activated, which decreases the winding speed of the wire. The function

  This embodiment is identical to that described above.

  above with reference to Figures 1 and 2 of the drawing, except that in the present case (Figure 2A) the winding speed of the wire increases when the light beam is obscured, relative to the sensor means, and decreases when this light beam is captured. As in the embodiment

  shown in Figures 1 and 2, in actual operation it will occur

  usually a more or less constant cycling of winding speed

some thread.

  Similarly, although reflector means and a combination of light source and sensor means have been used in one case, and a separate light source and sensor means in the other case, it should be appreciated that one or the other of these two-ray systems

  in both cases, or any other system

  photoelectric cell, or any other suitable means of

  detection of the thread tension. Moreover, although the green

  the optimal system of the light detector system in relation to the

  Basic jectory of the wire can vary according to the construction details

  adopted for the method and apparatus according to the invention, it is possible

  to place the light detector system at a distance of

  between 5 and 50 mm. and preferably between 10 and 30 mm, above

  or below the basic trajectory of the wire.

  As will be apparent to those skilled in the art, by conventionally adjusting the top and bottom winding speeds of the yarn and the sensor system, the present invention provides the certainty of evacuating the freshly embossed or textured yarn coming out of the yarn. a rebound embossing device in a substantially relaxed state, eliminating the risk of stacking and entanglement

some thread.

  Referring to FIG. 3, there is shown thereon an embodiment of the invention which is intended to produce

  compound or conjugate yarns, termed "fashion" or "fancy".

  A fluidized jet and especially embossing devices by

  rebound apply more particularly to the formation of

  posed and fancy as they ensure a greater degree of initial separation of the fibers separate son, and interlacing fibers of the respective son. Thus, by simultaneously passing two or more threads through the same embossing device by

  rebound a composite yarn is obtained in which the fibers of the yarns

  Poles are intertwined. If one of the wires feeds the rebound embossing unit at a lower speed than the other wires, the faster feeds will wrap around the slower wire, resulting in external wire effect. Outer wires are generally considered "son of effect" while the inner wire is called "core wire". The relative amount of looping of the effect wires per unit length of the wire delivered slower (i.e. core wire) will naturally depend on the relative feed rates of the core wire.

and son of effect.

  Due to the embossing and settling of the yarn which occurs in the embossing device, the fancy yarn will leave this device at a speed 5 to 15% lower than that at which the core yarn

  was directed to the embossing device. For example, we can use

  kernel wire feed rates in the range com

  between 61 and 122 m / in, and adopt a relationship between

  its effect thread and core thread reaching up to 100: 1. Similarly, by varying the advance rates of the effect son or son relative

  in the core wire, we can obtain extruded wire effects.

  All the wires can also be directed to the embossing device at about the same speed, and in this case the resulting wire will be an interlaced combination of the respective wires, so-called

commonly compound thread.

  Referring again to Figure 3, it can be seen that the mode of operation of the apparatus shown in this Figure is identical to that described above with reference to Figures 1, 2 and 2A except that throws two wires instead of one against the device

  embossed by rebound. Thus, the unstretched thermostatic wire 1 pro-

  comes from a feed reel (not shown) to achieve a first godet-shaped roller 3 associated with an oblique separating roller 2, then a second godet-shaped roller 5 also associated with an oblique separating roller 4. The rollers in the form of cup 3 and may optionally be heated. Rollers 4 and 5 advance

  wire 1 at a speed substantially greater than that which their

  prefer rollers 2 and 3, as already explained with reference to Figure 1, which stretches the wire 1 which is then projected against the

embossing device 6.

  A pre-stretched, multi-filament yarn is drawn from a

  Quet or supply reel (not shown) and first passes around a bucket-shaped driven roller 18, then around an oblique separator roller 18a and a tensioner roller 19 to end at the embossing device by rebound 6, at the same time as the yarn 1. The two yarns can be delivered either at the same rate, and in this case the product (textured yarn) will be a compound yarn, either at different rates, and in this case the yarn delivered at the lowest pace will form the wire of

  core, while the faster wire will form the so-called effect wire. Lors-

  While it is desired to obtain fancy yarns, effect thread / core wire ratios as high as 100: 1 or more may be used, but this ratio will preferably be maintained in the range of 3: 1.

at 50: 1.

  The respective yarns are embossed, intertwined by the action of the rebound embossing device 6 from which they emerge forming a single compound yarn lb. The details of the other components shown in Figure 3 and how they work are identical to those

  is described in a full description above relating to the

  Figures 1 and 2; therefore, there is no need to repeat this

  description. Similarly, although the light sensor device 10

  is placed above the general trajectory of the wire or wires,

  can notice that the embodiment described above in

  Figure 2A could be implemented in the first mode.

of realization.

  The son 1 and the may be constituted either by the same thermoplastic materials, or by thermoplastic materials

  different, and have the same number of moneys or different numbers.

  ent. Similarly, although, to facilitate the understanding of the descrip-

  Since only two yarns per unit of texturing have been shown, it is obvious to any person skilled in the art that more than two yarns, for example from 3 to 8 yarns, can be used, depending on the size of the yarn. device

  embossed by rebound and denier number of threads.

  Of course, many modifications and variations can

  can be made to the described, represented and

Claims (14)

suggested here, as well as in the claims which follow, without departing from the basic principles of the invention. CLAIMS   A method without an accumulator for giving a thermoplastic yarn, by rebound, an embossed or looped texture, which comprises the steps of delivering at least one multi-filament stretched thermoplastic yarn to a rebound embossing texturing device, so as to giving said texture to the yarn, and collecting the yarn thus textured on a rotating winding spindle, this method being characterized in that it consists in detecting the relative tension of said textured yarn at a point (10) situated between said device (6 ) of embossing texturing and said winding spindle (16), and to reduce the winding rate of the yarn when the tension exerted on the yarn and detected exceeds a determined value, and to increase on the contrary this winding rate of the winding. wire when the tension exerted on the wire and detected is equal to or less than said determined value, and that said determined value of tension is chosen so as to make so that the freshly textured yarn leaves the embossing texturing device (6) in a substantially relaxed state, without producing accumulation intermediate textured yarn.   2. Method according to claim 1, characterized   in that the winding spindle (16) is laterally offset   bounce embossing texturing device (6) so that the path of the textured yarn coming out of the texturing device and directed to   the winding spindle has a lateral component.   3. Method according to claim 2, characterized in that the relative vertical height of the lateral component of the path of the wire increases or decreases as the thread tension increases or decreases, and that said detected tension of the thread is detected according to said height relative vertical.   4. Method according to claim 3, characterized   in that said vertical height is detected by the projection   tion, reflection and sensing of a light beam across but above the base trajectory of the wire, and that this light beam is projected so that, with respect to the wire, as soon as the detected voltage of the wire exceeds said wire determined value, the wire itself prevents the detection of said light ray, and furthermore said winding rate of the wire is reduced when the light ray is not detected, and increased when this ray is detected. 5. Method according to claim 3, characterized in that said height of the wire is detected by projecting and sensing a light beam crossing the basic trajectory of the wire but below this trajectory, so that, as soon as the wire reaches said determined voltage value, it itself prevents detection of the light beam by occultation, and that the rate of winding of the wire decreases when the light ray is not captured, and increases when this ray is captured.   6. Process according to any one of the claims   1 to 5, characterized in that at least two drawn wires are delivered to the texturizing device by rebound embossing, so as to obtain a single yarn but composed and texture. 7. A device without accumulator for the treatment of thermoplastic wire intended to confer on this wire   a texture embossed by rebound, of the type comprising a provision   bounce embossing texturizer for imparting said texture to the thermoplastic yarn, at least one yarn supply means for providing the thermoplastic yarn, stretched to said text embossing pat   rebound, and a means of winding the wire, in the form of a   rotary spindle for collecting said textured yarn, said apparatus being further characterized in that it comprises: - a voltage detector means (10) for detecting the relative tension of the textured yarn at a point between the device (6) of texturing by rebound embossing and said winding spindle (16), - means for adjusting the winding rate of the thread, and - a control means (17) responsive to said tension, connected to said tension sensor means and said means for adjusting the winding rate of the yarn, so as to control the winding rate of the yarn in response to and as a function of the thus detected tension, so as to reduce the winding rate of the yarn as soon as said detected tension exceeds a given value, and on the contrary to increase this winding rate as soon as the detected voltage is equal or   less than said determined value of voltage.   Apparatus according to claim 7, characterized   in that there is provided a draw roller system (3) for drawing the wire before delivering it to the   texturing by rebound embossing.   9. Apparatus according to any one of the claims   7 and 8, characterized in that said pin (16) is   laterally offset from the device (6) of textu-   rebound embossing, in order to make the trajec-   textured yarn from this texturing device.   a lateral component and that the relative vertical height of this lateral component increases and decreases respectively as the thread tension increases and decreases.   Apparatus according to claim 9, characterized   characterized in that the yarn tension detecting means (10) comprises a light source (10c) for projecting a light beam, and a light-sensitive means (10d) for detecting this light beam and placed relative to the textured yarn such that, as soon as the tension exerted on the textured yarn exceeds said determined value, this yarn prevents the reception of light by said light-sensitive means (10d), which has the consequence of activating said control means (17) activated by the tension and to reduce the winding rate of the textured yarn, and, as soon as the light is again detected by the light-sensitive means (10d), to neutralize the control means (17) to   to increase the winding rate of the wire.   Apparatus according to claim 9, characterized   characterized in that the voltage detector means (10) comprises a light source (10c) for projecting a light beam and a light-sensitive means (10d) placed relative to the textured wire, so that as soon as the the tension exerted on the textured yarn exceeds said determined value, this yarn prevents the reception of light by said light-sensitive means (10d), which has the consequence of activating said voltage-activated control means (17) and to increase the rate of winding of the textured yarn, and that as soon as the light is again detected by the light-sensitive means (10d), to neutralize the control means (17) so as to   to reduce the winding rate of the wire.   Apparatus according to any of the claims   7 to 11, characterized in that it comprises a tensioning device (12), whose operation is slaved to that of said control means (17) and whose position relative to the wire is controlled so as to apply to the textured yarn a certain voltage at a point between the voltage sensing means (10) and the wire winding means (16), and a compensating arm (14) disposed with respect to the wire and the tensioning device so as to adjust the rate of winding of the wire, the assembly being made such that, as soon as the detected voltage exceeds the determined value, the control means (17) activates the tensioning device (12) to apply a determined tension to the wire, whereby the compensating arm (14) is rotated clockwise to reduce the winding rate of the wire and, as soon as the detected voltage is less than or equal to said determined value, the control means (17) neutralises the device tensioner (12) in order to reduce the applied voltage, which causes the compensating arm (14) to rotate counter-clockwise and thereby increase the winding rate of the textured yarn.   Apparatus according to claim 12, characterized   in that the tensioning device (12) is of the type electromagnetic disc.   Apparatus according to any of the claims   7 to 13, characterized in that it comprises at least two means (3, 5 and 18) for feeding the embossing device (6) with yarn by rebound so that at least two yarns feed this material. device for producing a unique combined yarn and texture.