FR2784397A1 - DEVICE FOR REMOVING THE SUB-TURNING WIRE FROM THE SPINDLES ON CONTINUOUS SPINNING OR TWISTING - Google Patents

Abstract

Device for removing the underwinding thread from the spindles 2 on a continuous spinning or twisting loom 1, this loom comprising a multiplicity of pins aligned on at least one face of the loom, this device comprising a knife 9 carried by a support 14 and arranged to cut the under-winding thread of each spindle between the spool being formed carried by this spindle and the under-winding turns formed on the spindle, below the spool, characterized in that it furthermore comprises mechanical means 15 carried by the support at a height level located below that of the knife 9 and arranged to come into direct contact with the sub-winding turns, after cutting the under-winding thread by the knife and as the spindle rotates for the formation of the current spool, to shred or at least tear or destroy the thread from the underwinding turns.

Description

i The present invention relates to continuous looms for spinning or

  twist and, in these trades, she

  relates to a device for the elimination of the under-wire

rewinding of the pins.

  In such a trade, which comprises, on at least one face, a multiplicity of aligned pins, wire spools are formed on supports which are each threaded on

  a vertical spindle and that rotate with the pins.

  When a reel is full, a particular device for guiding the winding wire carries out on the reel a few turns with wide pitch, then the wire leaves the reel to be wound on a few turns tight on the body of the spindle, to creating a piece of starting wire for the next coil, downstream of the winding wire guide device. This part of this winding wire which is located between the full reel and the guide device is

  referred to in the technique as "sub-winding thread".

  To remove or remove the full spool from its

  pin up, cut or break the sub wire

  winding, between the reel and the sub-winding turns, which separates the reel from the sub-winding wire and allows the removal of the full reel. When this has been removed, it is replaced by an empty tube which is forced into the spindle, then we proceed to winding on this new tube, for the formation of another coil, the tight coils of sub-winding exerting a friction-retaining action on the wire which is pulled by the guide device for the formation of the first winding turns on this new tube. After the formation of a sufficient number of turns on this tube, the wire is held by friction on the tube, so that the sub-winding wire, constituted by the

  length of wire formed by the tight turns of under-

  rewinding and the part of wire connecting the latter turns to the coil being formed, becomes unnecessary. In addition, this sub-winding wire must be separated from the reel being formed, before the end of the formation of this l-reel, so that it can be removed when it is full. It has become common practice, as described for example in French patent 2,686,906, to systematically, shortly after the start of the formation of a coil, to cut, using a knife, sub-winding wire between the sub-winding turns and the reel being formed, then remove by suction the wire from the sub-winding turns, so that, under the reel being formed, the spindle is free from any subwindow thread, until it receives a new subwound thread at the end of the training of

the current reel.

  Normally, the sub-winding wire must be removed by suction immediately after cutting, since a suction nozzle sucks the dead strand before this wire to unwind the sub-winding turns until they are completely eliminated. However, it may happen that the nozzle does not catch this dead strand before, or that the turns

  become entangled, preventing the removal of the under-

rewinding.

  To remedy this drawback, the patent below

  above proposes to provide, below the level of the knife and downstream thereof, a brush which is arranged to come into direct contact with the turns of sub-winding and for

eliminate it.

  This brush is effective and works well, but although it is extremely rare, it can

  happen that it is insufficient to eliminate these turns.

  The object of the invention is to improve this technique of removing the sub-winding turns, by giving any certainty that the sub-winding turns are eliminated, in the case where the sub-winding thread has not already been eliminated immediately after cutting by the action of

  the suction nozzle, if it exists.

  To this end, the device according to the invention, comprising a knife carried by a support and arranged to cut the sub-winding thread of each spindle between the reel being formed carried by this spindle and the sub-winding turns formed on the spindle, below the spool, is characterized in that it further comprises mechanical means carried by the support at a height level located below that of the knife and arranged to come into direct contact with the turns of sub-winding after the cutting of the wire of sub-winding by the knife and while the spindle turns for the formation of the reel in progress, to shred or at least tear or destroy the

thread of the sub-winding turns.

  Thus, in the device according to the invention, if the sub-winding thread has not been sucked in, and therefore eliminated, immediately after cutting by the suction nozzle, if the latter exists, we are assured of the effective elimination of the sub-winding thread thanks to the energetic mechanical action of

  shredding or tearing of the sub-winding wire.

  In general, the above suction nozzle is made to comprise, which is carried by the support in the vicinity of the knife and which is connected to a suction source; in this case, this suction nozzle can evacuate the sub-winding wire immediately after cutting

of it.

  According to an advantageous characteristic of the invention, pneumatic means are provided for

  rid said mechanical means of the under-wire

  rewinding or fragments of sub-winding thread that they took from the spindle. These pneumatic means advantageously include a compressed air blowing nozzle for cleaning the mechanical means and projecting the

  sub-winding thread or fragments of sub-winding thread

  rewinding to a suction port. This suction orifice is advantageously constituted by the inlet opening of the suction nozzle. In this case, this suction nozzle sucks in and eliminates the sub-winding wire, either directly and immediately after cutting, or indirectly by receiving the sub-winding wire or the fragments of this wire which have been driven out by mechanical means.

through the blowing nozzle.

  In this arrangement, the mechanical means are located between the blowing nozzle and the suction nozzle, and the blowing nozzle is oriented towards the mechanical means

and towards the suction nozzle.

  According to a preferred embodiment, the mechanical means comprise a plurality of teeth forming a claw. For example, the teeth are distributed in rows and columns, radially and axially with respect to the spindle. Preferably also, the teeth are inclined in a direction favoring their action of shredding, tearing or destruction of the wire of the sub-winding turns, towards the rear by considering the

direction of spindle rotation.

  As a variant, these mechanical means may include a rough, rough, active surface with roughness

or abrasive.

  According to an advantageous characteristic, the mechanical means are movable on their support, radially with respect to the spindle, and they are carried by a slide, a spring urging it towards the spindle to define the relative radial position of the mechanical means and the spindle by direct support against it with a worn skate

by the slide.

  Advantageously, the knife, the mechanical means and their associated elements are mounted reversibly on the support, for adapting the device to the two possible directions of rotation of the pins according to the direction of twist of the winding wire. In a mobile version of the device, the knife, the mechanical means and their associated elements are carried by a service trolley which is movable back and forth along the loom to pass in front of the pins, according to a

  active stroke for cutting and removing the sub-wire

  winding in one direction, and following an inactive stroke of

back the other way.

  In this mobile version, the mechanical means can be located downstream or behind the knife in

  considering the direction of the active race.

  In a manual version of the device, the knife, the mechanical means and their associated elements are carried by a hand tool capable of being brought selectively into a predetermined active position in front of each spindle for the simultaneous execution of the cutting of the sub-winding thread. by the knife and its elimination by mechanical means, the latter being located

  immediately below the knife.

  In this manual version, it is advantageously provided with polarizing means for the installation of the hand tool, without possible error, in the active position in front of the spindle, these means comprising for example a

  lug system and positioning housings.

  The invention will be clearly understood on reading the

  additional description which follows and with reference to

  attached drawings which form part of the description and in

  which: Fig. 1 is a schematic and partial side view of a continuous loom equipped with the device according to the invention in its automatic version in the case of a twist wire Z; Fig. 2 is a schematic plan view of the loom of FIG. 1, after rotation at 90 clockwise; Fig. 3 is a schematic side view showing the device of Figs. 1 and 2 in the phase of elimination of the sub-winding turns by mechanical means; Figs 4 and 5 show schematically in plan the two main operating phases of the automatic device of Figs. 1 to 3; Figs. 6 and 7 are views similar to FIGS. 4 and for a twist wire S; Fig. 8 is a schematic plan view showing a continuous loom equipped with the device according to the invention in its manual version, in the case of a twist wire Z; and Fig. 9 is a view similar to FIG. 8 for a twist wire S. We will first describe the characteristics common to both versions, automatic and manual, of the

device according to the invention.

  There is schematically and partially shown in the drawings a continuous spinning or twisting loom 1 which comprises, on at least one face, a multiplicity of vertical spindles 2 each driven in rotation about their axis by a friction transmission of the type comprising a belt (not shown) cooperating with a pulley 3

- 1 -

  coaxially secured to the bottom of each

respective pin 2.

  The pins 2 are carried by a fixed frame 4.

  Each pin 2 is intended to receive from the top a support or tube (not shown) on which is formed a

coil of wire.

  The different phases of forming a coil on a spindle 2 are well known in the art and, to this

  subject, reference may be made to the above patent.

  Only indicate here that at the end of the

  formation of a coil, a sub-operation is carried out

  rewinding which consists in rapidly lowering the slider ring slider (not shown) from the upper part of the spool to the body of the spindle (under the spool), the spindle continuing to rotate. When the batten meets its bottom stop, it stops its vertical movement, and the spindle continues its rotation a few turns to make the wire.

  sub-winding. On the one hand, we realize on the reel itself-

  even a few wide turns and, on the other hand, a few tight turns 5 are then formed directly on the body of the spindle, below the formed coil and above the pulley 3, on a rough area 2a. , beyond which the winding wire 6 goes back to its source. The length of the winding wire 6 which is located between the full reel and a device (not shown) for guiding the wire located upstream of the turns 5 is called "sub-winding wire". When removing or removing the full spool from above, the winding wire 6 is broken, in a manner also known, at a radial flange 7 located between the spool and the sub-winding turns 5, of the do some action

  wire retention exerted by the tight turns 5, they

  same retained by friction by the rough surface of the

zone 2a.

  After removing the full reel, the sub-winding wire present on the spindle 2 therefore ends, on one side of the turns 5, by a dead strand 8 while, on the other side of the turns, it is connected to the source of the winding wire through the guide device. After the positioning on the spindle 2 of a tube for the formation of a new coil, the winding wire 6, opposite the dead strand 8, is wound on this tube. During the formation of the first turns on this tube, the tight turns of sub-winding 5 exert by friction a sufficient retaining action so that the winding wire unwinds

from its source.

  After the formation of a few turns on the tube, the friction-retaining action exerted by these first

  turns is sufficient to retain the wire on the tube,

  that is, to prevent it from sliding on it, so that, as indicated above, the sub-winding turns 5 become unnecessary. Thus, before the end of the formation of the reel in progress, it is planned to interrupt the winding wire 6 between the sub-winding turns and the reel

  itself, with a view to removing the coils of the

  rewinding. This interruption of the winding wire is carried out, in a known manner, by a knife 9 which is located, in

  height, above the wire breaker collar 7 and above

  below an upper flange 10 whose function, together with the lower flange 7, is to radially separate the wire 6 from the body of the spindle 2 to present the wire to the knife 9. In FIG. 1, there is shown the state of the winding wire 6, between the windings of winding 5 and the

  reel being formed, immediately before cutting.

  When this cut has been made, as shown in FIG. 3, the sub-winding turns 5 are therefore bordered, on one side, by the dead strand 8 resulting from the breakage of the wire at the level of the flange 7 during the removal of the previous full coil and, from the on the other side, by a dead strand 11

  resulting from the cut that has just been executed.

  After this cut, and while the new coil

  is being trained on pin 2, the sub wire

  winding, present at the lower part of the spindle and constituted by the two dead strands 8 and 11 and the turns 5, is physically independent of the wire present on this spool and must be eliminated before the end of the formation of this spool. that is to say before the formation of a new series of sub-winding turns which completes the training cycle

of the coil.

  This elimination of the sub-winding thread can be done, in a first way, directly by suction in a nozzle 12 which is located in the immediate vicinity of the free end of the knife 9 and which is connected to a suction source ( not shown) by a channel 13 which is formed in the support 14 of the knife. In practice, as shown in particular in FIG. 2, the knife 9 can be mounted inside the suction nozzle 12 and the channel 13 so as not to

  protrude from the support 14 only by its cutting end.

  The elimination of the sub-winding wire immediately after cutting can occur because the nozzle 12 sucks inside the channel 13 one of the two dead strands 8 and 11 of the sub-winding wire. After cutting, because the spindle 2 rotates for the formation of the current coil, the two dead strands 8 and 11 each pass repeatedly in front of the suction nozzle 12. Considering the direction of rotation of the spindle 2 , the dead strand 8 constitutes the front end of the sub-winding wire, while the dead strand 11 constitutes the rear end. Therefore, due to the direction of winding of the sub-winding turns 5 directly on the spindle, the rear dead strand 11 cannot be sucked into the channel 13 with a sufficient pulling force to overcome the friction which is exerted between the turns and the spindle; moreover, these same frictions acting on the turns 5 exert on the dead strand 11 a traction which urges the latter to come out of the nozzle. It follows that the dead strand 11, driven in rotation by the spindle, leaves the suction nozzle, if however it has entered it. In practice, the dead strand 11 remains pressed against the spindle and, when passing in front of the nozzle, it comes off slightly from the spindle but without penetrating therein, and this due to the direction of rotation of the spindle, the direction of winding of the

  turns 5 and friction between the spindle and turns 5.

  On the other hand, as soon as the front dead strand 8 passes in front of the suction nozzle 12, the direction of rotation of the spindle 2 and the direction of winding of the turns 5 on the spindle means that the sub-winding wire is sucked up very quickly in the nozzle 12 and the channel 13, which is accompanied by a reel without sliding and therefore without friction of the wire of the turns. Thus, in the vast majority of cases, the sub-winding thread is removed by suction immediately after

  the cut, on its dead strand before 8.

  However, it can happen that this removal by suction does not occur, for example if the dead strand before 8 does not pass in front of the nozzle 12 or is too short to be sucked, or else if the winding wire partially unwinds from it -even without coming opposite the nozzle 12, or even if the turns 5 become entangled and thus exert sufficient resistance to overcome the force

suction on the wire.

  To take this risk into account, and to ensure with complete certainty the elimination of the sub-winding thread before the end of the formation of the coil in progress, mechanical means 15 are provided, which are worn by the support 14 at a level below that of the knife 9 and which are arranged to come into contact with the

  under-winding turns, after cutting the under-thread

  rewinding by the knife and while the spindle 2 rotates to form the current coil, so as to shred

  or at least tear or destroy the wire of the under-turns

  rewinding. These mechanical means include for example a

  body with rough, rough, rough or abrasive surfaces.

  However, according to a preferred embodiment of the invention, these mechanical means comprise, as shown in the drawings, a plurality of teeth 16 which constitute a claw. The teeth are preferably distributed in rows and columns, radially and axially with respect to the spindle. They can also be offset

  half a tooth for example.

  Preferably, the teeth 16 are inclined in a direction which promotes their tearing action,

  shredding or destruction of the wire of the under turns

  rewinding. Considering the direction of rotation of the pins, the direction of inclination of the teeth 16 is towards the rear,

from their foot to their tip.

  In the two embodiments of the device according to the invention, means are advantageously provided

  tires for ridding teeth 16 of the under wire

  rewinding or sub-winding thread fragments that they

  have taken by pulling out or the like from the spindle.

  We will now describe, with reference to Figs. 1 to, a first embodiment of the device according to

  the invention in a mobile version.

  In this mobile version, the knife 9, the mechanical means 15 and their associated elements, in particular the suction nozzle 12, the suction channel 13 and the pneumatic means 17, are carried by a plate 14, itself

  carried by a service trolley 18 which is movable back and forth

  comes along the loom to pass in front of pins 2, following an active race represented by arrow A, in

-liv - -

  one direction, for cutting and removing the sub wire

  rewinding, and following an inactive return race, in

the other direction.

  The service trolley 18 is carried and guided by the frame 4 of the loom which, for this purpose, comprises a lower front rail 19, on either side of which rollers rollers 20 carried by the trolley and have a vertical axis, and a rear upper rail 21, on either side of which rollers rollers 22 also carried by the carriage 18 and of horizontal axis, transverse to the longitudinal direction of the loom. For example, the rails 19 and 21 have a circular cross section, and the rollers 20 and 22 have a groove in which is partially housed the associated rail. The carriage 18 is preferably moved manually by the operator of the machine but can also be driven for example by a fixed or on-board motor, as described in

the above patent.

  As seen in Figs. 2, 4 and 5, the mechanical means 15 are located downstream, that is to say behind, of the knife 9 considering the direction of the active stroke A. Thus, in this mobile version, the service trolley 18 , passing in front of a spindle, first cuts the thread between the sub-winding turns and the reel being formed, then, by mechanical means 15,

  removal of the sub-winding turns.

  In this mobile version, due to the fact that the mechanical means 15 are located behind the knife 9, they are out of action of the suction nozzle 12. This is why the pneumatic means 17 have a blowing nozzle 23 compressed air to dislodge the mechanical means and project the sub-winding wire or fragments of this wire, which were taken from spindle 2, towards the suction orifice of nozzle 12. The blowing nozzle 23 is oriented towards the mechanical means 15 and towards the suction nozzle 12, and it is located behind the mechanical means w1 ', considering the direction of the active stroke A, that is to say that the mechanical means 15 are located between

  the blowing nozzle 23 and the suction nozzle 12.

  The mechanical means 15 are movable on their support 14, radially with respect to the spindle, and they are carried directly by a slide 24 cooperating with a spring 25 urging it towards the spindle, that is to say towards the outside. On its underside, the slider 24 fixedly carries a shoe 26 projecting towards the pins 2. At least on its front face 27, which is located in a longitudinal vertical plane, the shoe 26 is made of a material of

wear-resistant friction.

  The front face 27 is intended to come into direct contact with the spindle 2, below the zone 2a of the turns 5. This front face serves as a reference surface for defining the relative radial position of the spindle 2 and the mechanical means 15 The free end of the latter is set back with respect to the front face 27, by a predetermined distance with precision, although this distance can be adjusted. For example, this withdrawal distance is

about 0.4 mm.

  The position at which the shoe 26 rests at rest is defined by stops (not shown) acting between the slide 24 and the plate 14. For this position, the front face 27 of the shoe is located beyond a vertical plane

  longitudinal tangent to the pins 2 on the side of the carriage 18.

  In operation, when the knife 9 has made the cut, as described above, the carriage 18 drives it beyond the spindle concerned and brings the

  mechanical means 15 of this spindle.

  The front face 27 of the pad is bordered on each side by a ramp 28 intended to come into contact with the spindle Fi and to make the pad 26 move back, against the action of the spring 25, until the front face of the shoe comes into contact with the spindle. During the entire passage of the front face 27 of the pad in front of the spindle 2, the spring 25 holds the pad against the spindle, so that, during this phase, the mechanical means 15 are kept a short distance from the spindle 2, by example 0.4 mm, for

  shred, rip or destroy the coils of

  rewinding. Before, during and after the action of elimination by mechanical means 15, the blowing nozzle 23 violently projects compressed air onto them, ridding them of the wire or fragments of sub-winding wire that they have taken, or are taking, from spindle 2. This wire or these fragments of wire are then transported by this same flow of air to the inlet of the suction nozzle 12 to be eliminated outside at

across channel 13.

  During a round trip cycle of the carriage 18, the

  knife 9 cuts all the wires that come before him.

  If the sub-winding thread is not removed immediately after cutting by simply unwinding the turns 5, it is

  normally from the first action of the mechanical means 15.

  Failing this, it is possible to operate several round-trip cycles during the course of the formation of the coil to ensure good elimination of the turns 15. It can be eliminated during the return stroke of the carriage, although, in the case of the teeth 16 oriented selectively, the action of these is weaker than during the outward race A. Otherwise, this sub-winding thread, with that which has been formed on it, is

  eliminated in the next outward race.

  Of course, the pneumatic system constituted by the suction nozzle 12, the suction channel 13 and the blowing nozzle 23 could be arranged in a different manner. For example, the suction nozzle 12 could be moved back to be at the level of mechanical means, or one could provide an additional suction nozzle in this position. It would, for example, also be possible, while keeping the suction nozzle 12 at the level of the knife 9, to remove the pneumatic means 17 and to replace them, at least at one end of the loom, with a rotating brush, possibly associated

to a suction nozzle.

  It will however be noted that the combination of the inclined teeth 16, of the blowing nozzle 23 and of the suction nozzle 12, with its channel 13, is particularly advantageous because the air circulates along the teeth of their foot towards their point, which ensures good cleaning of the teeth, and the nozzle 12 allows the sub-winding wire to be evacuated either

  immediately after cutting, or later.

  It is known that, depending on the direction of the twist of the winding wire, the pins 2 must rotate in one direction or the other. In the embodiment of Figs. 1 to 5, it is a twist wire Z and, consequently, the pins 2 rotate clockwise B, in axial view from the side of their free end; the active stroke A of the carriage 18 is done from left to right, considering the

  front loom, as shown by the arrows.

  On the contrary, as shown schematically in Figs. 6 and 7, in the case of a twist wire S, and according to the same observation convention as previously, the pins 2 rotate counterclockwise C and, for its active stroke A, the carriage moves the right towards

left. To adapt to these two operating modes, the device according to

  the invention is designed so that the knife 9, the mechanical means 15 and their associated elements can be mounted reversibly

  on their support. This can be done in various ways.

  In - For example, there may be two plates 14 symmetrical with respect to a transverse vertical plane of the carriage 18, one or the other of these plates being put in place according to the operating mode, one being adapted to the torsion S and the other with torsion Z. On the other hand, there can be a single knife 9, a single slide 24 and unique mechanical means 15; the mechanical means 15 can be mounted in a position or in the reverse position on the slide 24. We will now describe, with reference to FIG. 8, a preferred embodiment of the manual version of the device according to the invention in the case of a torsion wire Z. In this case, there is no service trolley, and it is the operator who , using a hand tool 29, performs spindle by spindle cutting the subwound wire

and its elimination.

  The hand tool 29 comprises a body 30 provided with a

  handle 31. In the upper part, the body 30 carries the knife 9.

  A suction channel 13 is formed in the body 30 and the handle 31 and it terminates at the front by a suction nozzle or orifice 12 in the region of the knife 9, the latter being by

  example partially housed in channel 13.

  Below the knife 9, the body 30 carries the slider 24. In turn, the slider 24, biased towards the outside by the spring 25, carries the means 15 for removing the sub-winding thread and, in part low, the shoe 26 which has a front face 27 of support on the spindle, this assembly being arranged in an identical or similar manner to that which has been described with reference to FIGS. 1 to 7. However, as a variant, provision can be made for the shoe 26 to come into contact with the spindle 2 not by its front face 27, but by two rollers 32, this variant also being

  applicable to the devices of Figs. 1 to 7.

  In the manual version of Fig. 8, the fact that, in the active position, the hand tool 29 is fixed relative to the axis of the spindle, the mechanical means 15 are located immediately below the knife 9, so as to act on the turns of sub-winding. In operation, the winding wire is cut by the knife 9 almost immediately, after at most one revolution of the spindle. Simultaneously and after this cut, the

  mechanical means 15 act on the turns of the

  rewinding to shred, tear, destroy or, in general, eliminate them. This elimination takes place as previously described with reference to Figs. 1 to 7. In a manner not shown, it is possible to provide a blowing nozzle disposed under the mechanical means 15 and oriented vertically upward, for cleaning the mechanical means 15, in particular in the case where these include teeth, and direct the wire or fragments of

  sub-winding wire to the suction nozzle 12.

  However, in this simple manual version, one generally dispenses with such a blowing nozzle, the mechanical means 15 being cleaned by hand, for example using a brush, when the tool has been separated from the profession, this cleaning being done after one or more operations

  elimination of the sub-winding thread.

  The hand tool 29 and the frame 4 of the loom carry means for positioning the tool relative to the loom. These means are for example constituted by lugs 33, carried by the body 30 of the hand tool, which cooperate with housings 34 formed in the frame 4 of the loom. Preferably, these positioning means are of the polarizing type so that the installation of the tool 29 on the frame 4, in the active position of cutting the winding wire and eliminating the sub-winding wire, is done without fault

possible.

  There is shown in FIG. 9 a mounting variant of the manual version of the device according to the invention, adapted to the case of a torsion wire S.

  In this case, pin 2 rotates anti-clockwise

  clockwise C, opposite clockwise B in Fig. 8 in the case of a Z twist. Similarly to what has been described for the automatic version, the knife 9 and the mechanical means 15 of FIG. 9 are mounted on the body 30 of the hand tool, being oriented to the left, while, in FIG. 8 they

  are mounted facing right.

  Of course, the invention is not limited to the embodiments which have been described; on the contrary, it would be possible to conceive of various variants without thereby departing from its scope, in particular as regards the structure of the mechanical means 15 for removing the sub-winding thread and as regards the arrangement of the means

  tires acting by suction and / or blowing.

Claims (15)

R E V E N D I C A T I ON S   1. Device for the elimination of the sub-wire   rewinding the spindles (2) on a continuous spinning or twisting loom (1), this loom comprising a multiplicity of spindles aligned on at least one face of the loom, this device comprising a knife (9) carried by a support (14, 29) and arranged to cut the sub-winding wire of each spindle between the spool being formed carried by this spindle and the sub-winding turns (5) formed on the spindle, below the spool, characterized in what it comprises in addition to the mechanical means (15) carried by the support at a height level located below that of the knife (9) and arranged to come into direct contact with the coiling windings, after the cutting the sub-winding thread by the knife and while the spindle is rotating for the formation of the reel in progress, for shredding or   at least tear off or destroy the wire of the under-turns   rewinding. 2. Device according to claim 1, characterized in that it comprises a suction nozzle (12) carried by the support, in the vicinity of the knife, and connected to a suction source in order to be able, if necessary, to evacuate the wire of   under-winding immediately after cutting it.   3. Device according to one of claims 1 and   2, characterized in that it comprises pneumatic means (17) for ridding said mechanical means (15) of the sub-winding wire or fragments of the sub-winding wire   that they took from the spindle.   4. Device according to claim 3, characterized in that the pneumatic means (17) comprise a nozzle (23) for blowing compressed air to dislodge the mechanical means and project the sub-winding wire or the fragments of wire under - rewinding to a suction port. or 5. Device according to claim 4, characterized in that the mechanical means (15) are located between the blowing nozzle (23) and the suction nozzle (12), and the blowing nozzle is oriented towards the mechanical means and to the suction nozzle.   6. Device according to one of claims 1 to 5,   characterized in that the mechanical means belong to the group consisting of a plurality of teeth (16) forming a claw and an organ with a rough, raspy active surface, roughness or abrasive.   7. Device according to claim 6, characterized in that the teeth (16) are distributed in rows and columns, radially and axially with respect to the spindle.   8. Device according to one of claims 6 and   7, characterized in that the teeth are inclined in a direction favoring their shredding action,   tearing or destruction of the wire of the sub-turns   rewinding, backwards considering the direction of rotation of the spindle.   9. Device according to one of claims 1 to 8,   characterized in that the mechanical means (15) are movable on their support, radially with respect to the spindle, and they are carried by a slide (24) cooperating with a spring (25) urging it towards the spindle to define the radial position relative mechanical means and spindle by   direct support on the latter of a shoe carried by the slide.   10. Device according to one of claims 1 to   9, characterized in that the knife, the mechanical means and their associated elements are mounted reversibly on the support, for adapting the device to both directions of he -   possible rotation (B, C) of the pins according to the direction of the twist of the winding wire.   11. Device according to one of claims 1 to   , characterized in that, in a mobile version, the knife, the mechanical means and their associated elements are carried by a service trolley (18) which is movable back and forth along the loom to pass in front of the spindles, following an active stroke (A) for cutting and removing the sub-winding thread in one direction, and following a stroke   inactive back the other way.   12. Device according to claim 11, characterized in that the service trolley (18) is moved manually by the operator of the machine but can also be driven for example by a fixed motor or on board.   13. Device according to claim 11 or 12, characterized in that the mechanical means (15) are located downstream or behind the knife (9) considering the direction active stroke (A).   14. Device according to one of claims 1 to   , characterized in that, in a manual version, the knife, the mechanical means and their associated elements are carried by a hand tool (29) capable of being brought selectively into a predetermined active position in front of each spindle for the simultaneous execution of the cutting the sub-winding thread and eliminating it by the means   mechanical, the latter being located immediately underside of the knife.   15. Device according to claim 14, characterized in that it comprises polarizing means (33, 34) for the establishment of the hand tool (29), without error   possible, in active position in front of the spindle.