EP0230974A2 - Dispositif de tirage de fil - Google Patents

Dispositif de tirage de fil Download PDF

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Publication number
EP0230974A2
EP0230974A2 EP87100760A EP87100760A EP0230974A2 EP 0230974 A2 EP0230974 A2 EP 0230974A2 EP 87100760 A EP87100760 A EP 87100760A EP 87100760 A EP87100760 A EP 87100760A EP 0230974 A2 EP0230974 A2 EP 0230974A2
Authority
EP
European Patent Office
Prior art keywords
thread
winding body
take
inlet
free end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87100760A
Other languages
German (de)
English (en)
Other versions
EP0230974A3 (en
EP0230974B1 (fr
Inventor
Erich Dr.-Ing. Lenk
Albert Stitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19863602765 external-priority patent/DE3602765A1/de
Priority claimed from DE19863611740 external-priority patent/DE3611740A1/de
Priority claimed from DE19863613040 external-priority patent/DE3613040A1/de
Application filed by Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Publication of EP0230974A2 publication Critical patent/EP0230974A2/fr
Publication of EP0230974A3 publication Critical patent/EP0230974A3/de
Application granted granted Critical
Publication of EP0230974B1 publication Critical patent/EP0230974B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/86—Arrangements for taking-up waste material before or after winding or depositing
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D7/00—Collecting the newly-spun products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a method and a thread take-off device for pulling a continuously supplied thread.
  • This method and this device serve the purpose of withdrawing and depositing a thread which is delivered essentially continuously at a constant speed, for example by means of a godet or another delivery mechanism, while maintaining sufficient thread tension.
  • this depositing serves to remove the continuously starting thread.
  • the thread drawn off by the method or by the device is fed into a waste container.
  • the method and the device are also suitable for depositing the thread into a fleece or felt.
  • the device or a large number of such devices is arranged in front of the storage surface, for example an assembly line for the fleece or the felt.
  • the thread drawn off by the method or the device can also be deposited in a transport device, for example a jug or on a conveyor belt.
  • a transport device can either lead to a further thread treatment device or serve directly as a thread treatment device, for example be equipped as a treatment drum for thermal treatment of the thread material.
  • the method according to the invention can also be used to apply the continuously delivered thread to the device in such a way that the thread is drawn off tangentially again after the thread is applied and then e.g. processed or further processed.
  • the known devices for pulling a continuously supplied thread are so-called suction pistols and air injectors, in which the thread is subjected to a strong air flow.
  • the limit of the possibility of using such devices is at thread speeds of approx. 4000 m / min (65 to 70 m / s).
  • godets There is a danger that the thread will form a winder on the godet due to thread tension being too low.
  • the object of the invention is then to provide a method for pulling a continuously supplied thread and a thread take-off device with which the aerodynamic and hydrodynamic limits of the known suction pistols can be exceeded and sufficiently high, preferably constant thread pulling forces can be exerted on the supplied thread.
  • this object is achieved by a method according to claim 1 and a thread take-off device according to claim 3.
  • the core of the thread take-off device is an overhung winding body which has a decreasing cross section towards its free end.
  • the thread is passed onto the winding body in the region of the thick end, the winding body having a circumferential speed in the normal plane coinciding with the thread inlet, which is essentially the same as or higher than the thread speed of the thread running up.
  • the winding body in the area of the thread inlet has a diameter that becomes smaller and smaller in the conveying direction.
  • the thread running onto the winding body and winding up is twisted by the winding body into rotating, helical turns which are subjected to a force effect in the axial direction of the winding body.
  • This force effect is exerted in that the winding body has a decreasing diameter in the axial direction, so that the helical thread turns slip on the winding body.
  • the decrease in diameter of the winding body and the coefficient of friction of its surface are to be coordinated so that this slipping is always guaranteed.
  • a too large decrease in diameter affects the thread tension, which can be exerted on the delivered thread with the device.
  • the thread will not slide off the winding body if the decrease in diameter is too small.
  • a suitable value for the decrease in diameter on the one hand and the coefficient of friction of the surface of the winding body on the other hand must therefore be determined by experiment.
  • the axial force effect exerted on the thread windings can be supported in particular by gravity, in that the winding body is mounted vertically or inclined with a strong vertical component.
  • the force effect is supported in that an air flow with an axial component is directed onto the surface of the winding body and the thread turns formed thereon.
  • the thread take-off device can be designed as a hand-held device.
  • the thread take-off device can also be used as a stationary device in a variety of applications.
  • the thread take-off device can be mounted so that the axis of the winding body is perpendicular or inclined. This results in an additional force effect to promote the thread windings in the axial direction by gravity.
  • the thread take-off device can also be mounted with the horizontal axis of the winding body. This is especially useful for creating vertical threads. In this case, the winding body is followed by a thread channel through which the bulge is removed.
  • an air flow can also be generated in the thread channel.
  • the thread channel can also serve the purpose of redirecting the vault downwards in a vertical conveying direction. In any case, it is necessary to first remove the thread turns falling off the winding body overhead, ie in the axial direction from the winding body. It is true that particularly high and uniform thread pulling forces can be exerted if the thread channel is axially offset in relation to the thread inlet in the direction of the thinner end and is arranged tangentially to the surface of the winding body.
  • the mouth of the thread channel engages around the free end of the winding body in a plate-like or pot-shaped manner, so that the thread windings falling from the end of the winding body above the head are first caught by the pot-shaped part of the mouth and then sucked into the thread channel attached to the pot. After the thread windings have been sucked off, the thread runs tangentially from the winding body and can now be deposited or treated or processed.
  • the winding body is preferably designed as a rotating body (rotating body). Cones, hyperboloid stumps, paraboloids or the like, which are cut in the area of their smallest cross section, are particularly suitable here. If the winding body is designed as a cone or a truncated cone, its cone angle (conicity angle) can remain constant over the length or can increase or decrease continuously or in stages.
  • the winding body is arranged in a thread chamber, preferably a rotationally symmetrical chamber.
  • a thread chamber preferably a rotationally symmetrical chamber.
  • an air vortex forms in this chamber, which can be supported by blowing in tangential air currents.
  • the air vortex is by blowing e.g. by means of air nozzles, and so strong that its peripheral speed is greater than the thread speed. This ensures that the first thread turn comes into system contact with the circumference of the rotating body. This allows the thread tension to be increased and evened out.
  • the air flow in the vortex is facilitated in that a helical or spiral groove is cut into the wall of the rotationally symmetrical chamber, which extends from the mouth of the inlet to the area of the free end of the winding body.
  • a helical or spiral groove is cut into the wall of the rotationally symmetrical chamber, which extends from the mouth of the inlet to the area of the free end of the winding body.
  • the shape of the rotationally symmetrical chamber viewed in the axial direction — is adapted to the shape of the winding body with a small gap.
  • a thread channel can be connected to the thread chamber, through which the vault flying off the winding body is led away. Therefore, an air flow is preferably generated in the thread channel.
  • the thread channel then opens into a corresponding waste container or on a conveyor belt.
  • the thread take-off device can also be attached directly to a waste basket or directly above a conveyor belt.
  • the formation of the thread winding on the winding body is to be supported.
  • the axis of the thread inlet to the axis of rotation of the winding body is laterally displaced so far that it approximately affects the surface of the winding body in the normal plane.
  • the invention also provides that the thread windings are deposited on the winding body from the outset with a certain slope. It is envisaged that the thread inlet crosses the axis of the winding body at an obtuse angle such that the incoming thread - based on the winding body - has a movement component in the circumferential direction and a movement component in the axial direction.
  • This is particularly useful and is useful when an air vortex is to be generated on the surface of the winding body or when this air vortex is formed in a helical or spiral groove in the chamber which surrounds the winding body.
  • the thread take-off device can be used to catch cut or torn, tarnishing threads.
  • the thread inlet is designed as an inlet nozzle.
  • a suction flow can be produced in the thread inlet nozzle by special design of the air flow of the thread chamber.
  • the thread inlet connection - in the manner of a thread suction gun - is provided with injectors, through which compressed air jets are directed into the thread inlet channel, which on the one hand generate a suction flow and on the other hand convey the sucked thread into the thread chamber.
  • the thread take-off device can also be used to catch a running thread between two godets that convey the thread.
  • the thread inlet is provided with an insertion slot. If the winding body is arranged in a thread chamber, the insertion slot extends through the thread chamber in such a way that the running thread can be brought into circumferential contact with the winding body in the region of the thick end of the winding body. If the running thread is then cut off or torn off behind the winding body, it is caught by the high-speed rotor, wound up and discharged through the take-off device in the form of a vault, the thread tension in the running thread remaining so high that the thread also on the previous one Delivery plant, eg godet, does not form a winder.
  • the thread take-off device according to this invention is particularly suitable for removing the continuously supplied threads which have to be thrown into the waste at times of business interruption.
  • the thread take-off device can be designed as a hand-held device and can be used for thread catching, waste disposal and thread threading similarly to the suction pistols previously used.
  • a problem that has not yet been solved in any way is to use several at high speed - e.g. at a spinning station - pulling off and eliminating threads during the bobbin change and likewise putting the running threads back on the empty tubes after the bobbin change.
  • Such systems which were previously used at thread speeds below 4000 m / min, are e.g. shown in EU-A 85103295.3 (Bag. 1393).
  • the thread take-off device according to this invention can be used in particular in such systems.
  • several thread take-off devices with a central channel are arranged one behind the other in their rotating body in such a way that the amount of thread withdrawn from the rotating body is drawn off through the central channel of the subsequent rotating body.
  • the thread take-off device according to the invention is also used particularly advantageously for depositing a large number of threads to form a fleece.
  • injectors have been used so far, which are able to pull out several threads at a speed of more than 3000 to 4000 m / min while maintaining the required thread tension and spit on a conveyor belt. Injectors have so far been used for this purpose.
  • the efficiency can be improved by an order of magnitude by a factor of a hundred and corresponding power savings can be achieved.
  • the thread take-off device can also be used as an attachment for thread transport devices, e.g. Conveyor belts and cans, usable.
  • the thread take-off device is particularly suitable for avoiding the formation of winders on an upstream thread godet. It is also possible to specify or regulate a specific thread tension.
  • the thread inlet is axially adjustable. Here it is possible, for example, to move the thread inlet to the thinner end of the winding body in order to catch the thread. The thread is then caught with a lower thread tension and twisted into a winder on the take-up body and discharged overhead. When the thread is caught safely, the thread inlet can be moved axially towards the thicker end until a desired thread tension is reached. Additionally or alternatively, it is possible to measure the thread tension and to set the axial position of the thread inlet as a function of the measured thread tension and a predetermined target value. In this way it is possible to regulate the thread tension.
  • FIG. 1 shows in longitudinal section a preferred embodiment of the thread take-off device according to the invention.
  • the thread picked up at the inlet mouth 5 is sucked in by the injector attachment 1, which has an annular channel 3 and the blowing channels 4 around the section 2 of the thread inlet, and passes through the section 6 of the thread inlet into the cutting area 9 of the thread channel 15 with the Thread inlet 2, 6 a;
  • this cutting area 9 is expanded into a rotationally symmetrical chamber.
  • the thread channel 15 adjoins the lower conical region 30 of the chamber 9.
  • the thread hits the winding body 10 driven by the drive 14 at high speed and is wound onto it. Through the respective subsequent turns, the existing turns are continuously shifted towards the thin end 33 of the winding body 10.
  • the thread channel 15 continues as a thread channel 16 in the injector attachment 17 placed on the end of the thread channel 15.
  • the injector attachment 17 has an annular channel 18 with compressed air connection 19, 20 and the blowing channels 21. The latter open into the thread channel 16 at an acute angle and provide one additional acceleration of the vault sliding away from the winding body 10 and carried along by the air flow and for a pressure drop to the chamber 9 with area 30.
  • the winding body 10 which is mounted at 31 in the end wall 13 of the housing 12, has the shape of a truncated cone, which points with its thin, rounded end 33 in the conveying direction 29. Its axis of rotation 7 lies in the axis 7 of the enlarged chamber 9, the conical region 30 and the thread channel 15 and 16.
  • the axis 8 of the thread inlet 2, 6 opens here perpendicularly into the chamber 9 and extends perpendicular to the axis 7. It can lie in one plane with the axis 7 of the chamber 9 or the thread channel and intersect it.
  • the thread inlet 6 is arranged in such a way that the axes 7 and 8 intersect, the thread hits the winding body 10 centrally at the point of impact lying in the normal plane 35. It has been shown that in some cases the displacement of the point of impact 38 on the winding body 10 with respect to the axis of rotation 7 to the right can be advantageous. But it can also be offset laterally.
  • FIG. 2 Such an arrangement of the two axes 7 and 8 is shown in FIG. 2.
  • the axis 8 of the thread inlet 2 touches the winding body 10 in the normal plane 35 to the thread channel axis 7, which runs approximately in the axis 8 of the thread inlet 2, 6.
  • the speed of the winding body 10 is to be dimensioned such that its peripheral speed in the normal plane 35 coinciding approximately with the thread inlet 6 corresponds in any case to the thread speed, but is preferably also greater. It should be taken into account that in the case of a slip drive (eg a compressed air turbine) the peripheral speed automatically adapts to the thread speed. To maintain the thread tension, it is primarily important that the drive also applies the necessary torque at this peripheral speed.
  • a slip drive eg a compressed air turbine
  • Fig. 3 shows an embodiment in which the end wall 13 of the housing 12 is designed as an end plate 26.
  • This is provided with an annular duct 27 (not shown) connected to the air supply, from which blow ducts 28, distributed over the circumference, open into the chamber 9 at an acute angle to the axis 7.
  • the air jets emerging through the blowing channels 28 are either aligned approximately parallel to the surface of the winding body 10 so that they sweep over them, or strike the winding body 10 at an acute angle 32 approximately in the cutting area 9 of the thread inlet 2, 6 and thread channel 15, 16 .
  • Your task is to support the detachment of the thread turns forming on the winding body 10 and to ensure that the vault is transported away safely.
  • the bead 11 indicated on the end face of the winding body 10 facing the end wall 13 is intended to prevent winders on the shaft between the winding body 10 and the end wall 13.
  • FIG. 4 A refinement form of the thread take-off device according to the invention is shown in FIG. 4.
  • the inlet-side injector attachment 1 is omitted here, so that the thread inlet consists only of a connecting piece 6 opening into the chamber 9.
  • the winding body 10 here has a different shape with respect to FIGS. 1 and 3 with concave-shaped surface lines 34.
  • at least the tangents 37 applied to the surface lines 34 in the cutting area 9 form an angle to the axis of rotation 7 which is in any case greater than the assigned friction angle.
  • the speed of the winding body 10 is dimensioned such that its peripheral speed in the normal plane 35 coinciding approximately with the thread inlet 6 essentially corresponds to the thread speed of the thread running onto the winding body 10.
  • FIG. 5 and 6 show two further embodiments.
  • both have a threading or insertion slot 36, which enables the thread to be picked up by the thread take-off device at any point in the thread path.
  • the embodiment according to FIG. 5 essentially corresponds to that shown in FIG. 2; it differs from it only in the insertion slot 36 comprising the thread inlet 2, 6 and part of the circumference of the thread channel 15 or the enlarged chamber 9. How large is the area that the insertion slot 36 comprises in the chamber wall 12 depends on the local conditions; it should in any case be dimensioned such that the thread guided approximately in the axis 8 of the thread inlet 2, 6 can lay freely on the surface of the winding body 10 without touching the lower limit of the insertion slot 36.
  • the ring channel 3 is interrupted in the region of the insertion slot 36 and its two open ends are closed by the boundary walls of the insertion slot 36.
  • the inlet-side injector attachment 1 can also be omitted here, provided the outlet-side injector attachment 17 is present.
  • the channel-shaped thread inlet 2, 6 of the designs previously described has been omitted; instead, it has a thread insertion slot 36.
  • a piece of the chamber wall 12 with the incorporated insertion slot 36 is indicated in the left part of FIG. 6.
  • the air flow that transports the vault is generated by the injector attachment 17 on the outlet side and is practically fed only by the thread insertion slot 36, so that there is a strong suction effect in the thread impact area.
  • the injector attachment 17 must be matched to the amount of air thereby increased so that not only that through the blowing channels 28 of the end plate 26, the air that is blown in is completely removed, but moreover the suction effect required for receiving the thread is also present in the insertion slot 36.
  • the exemplary embodiment according to FIGS. 7 and 8 is intended as a stationary thread take-off device which sits on a waste basket 42, which is, however, only partially and schematically shown here.
  • the cylindrical housing 12 has a cylindrical projection 43 which is fitted into the lid 42 of the waste basket.
  • the housing 12 has a bore which is cylindrical in its upper part 9 and conical in its lower part 30.
  • the housing 12 is closed on its upper end by a cover 13.
  • the cover 13 is connected to the housing by screws 44.
  • the bearing 31 of the winding body 10 is located in a bushing 45 of the cover 13, which is concentric with the bore 9 in the housing 12.
  • the winding body 10 is part of a structural unit with the shaft 45, the turbine wheel 46 and the winding body 10.
  • the shaft 45 is firmly connected to an end face 47 of the turbine wheel and is freely rotatably supported in the bushing 49 by two ball bearings.
  • the turbine wheel 46 consists of the two end disks 47 and 48, between which the turbine blades 50 (section according to FIG. 8) are fastened, for example by welding.
  • the winding body 10 On the forehead disc 48 of the turbine wheel 46, the winding body 10 is seated.
  • the winding body 10 is a cone which has essentially the same conicity as the bore 30 in the housing 12.
  • the winding body forms an annular thread chamber 9 in this bore, which also tapers conically with its mean diameter toward the free end of the winding body 10.
  • the cone angle of the winding body 10 is smaller than the cone angle of the bore.
  • the width of the thread chamber 9 also tapers towards the end of the winding body 10.
  • the winding body 10 At its upper, clamped end, the winding body 10 has a bead 11, which forms a narrow channel in the form of an annular nozzle 39 with the cylindrical part of the bore in the housing 12.
  • the upper cylindrical part of the bore in the housing 12 forms an annular channel 40 with and around the turbine wheel 46.
  • the compressed air channel 51 opens into this annular channel 40.
  • the compressed air channel 51 is directed essentially tangentially into the annular channel. Its orientation and the shape of its mouth is generally known in the construction of compressed air turbines and is not described in more detail here. Since the bead 11 of the winding body 10 of the cylindrical chamber wall in the housing 12 forms an annular nozzle with strong throttle resistance, the required air pressure can build up in the annular channel 40.
  • the turbine wheel can be driven at speeds of up to 10,000 rpm.
  • the blades 50 of the turbine wheel leave the outflow channel 52 free in the center of the turbine wheel.
  • the outflow channel is closed on the bearing side by the end plate 47.
  • the outflow channel 52 opens to the free end of the winding body 10 in its central channel 41, the end plate 48 also having a correspondingly large hole.
  • the pin 58 in the center of the end disk 47 is shaped such that the air passing between the blades 50 is deflected in the direction of the central channel 41 in the winding body 10.
  • the thread inlet 6 opens into the housing bore 12.
  • the thread inlet 6 lies essentially on a tangential plane of the winding body 10.
  • the thread inlet 6 can be on a normal plane of the winding body 10 lie.
  • the thread inlet channel 6 can also be arranged such that it crosses the axis of the winding body 10 at an obtuse angle in the projection according to FIG. 7.
  • the thread conveyed by the thread inlet 6 can also have a movement component in the direction of the free end of the winding body 10.
  • FIG. 7A differs from that of FIG. 7 only in that a spiral groove 72 is cut into the inner casing of the housing 12 (thread chamber) and that the thread inlet 6 is designed as a pipe socket, which is not only tangential, but also with axial feed component is directed into the thread chamber 12.
  • the spiral groove 72 surrounds the winding body 10 in one or more turns and runs out in the region of the free end of the winding body.
  • the thread inlet 6 is aligned so that it is aligned as precisely as possible with the inlet of the spiral groove 72.
  • This groove 72 is indicated by dashed lines in FIG. 8.
  • the compressed air duct 51 is pressurized with compressed air and the turbine wheel 46 with the winding body 10 is thereby rotated.
  • an air flow is created in the annular thread chamber 9.
  • This air flow leads to a suction flow in the thread inlet 6.
  • the thread is sucked in by this suction flow.
  • the suction flow directed tangentially onto the winding body 10 in the thread channel 6 leads at the same time to a helical vortex which has the same direction of rotation as the rotating body 10 and also a feed component in the axial direction of the rotating body 10.
  • this air vortex is intensified by the spiral groove 72 provided in the wall of the chamber 12, so that the thread is first blown into the spiral groove 72.
  • the peripheral speed in the normal plane in which the thread leads into the thread chamber 15 is at least equal to the thread speed with which the thread is delivered.
  • the thread is gripped by the rotating body 10 and taken along.
  • the thread forms a winder.
  • This winder also tends to slide towards the thin end of the rotating body 10.
  • This sliding is based on the fact that the thread windings lie on the winding body with a low but sufficient thread tension and bearing force due to the centrifugal forces and slide off because of the taper, the subsequent windings displace the previous windings from the normal plane of the winding body, in which the thread is first gripped by the winding body.
  • This slipping is facilitated by the fact that the winding body is produced with a low coefficient of friction, so that the thread tensile force leads to a slipping of the thread turns in the axial direction.
  • the thread forms a plurality of more or less regular, helical turns, which continuously shift towards the thin end of the rotating body 10 and detach from the rotating body 10.
  • the winder formation is promoted by the fact that the air vortex forms around the rotating body 10.
  • the axial sliding and conveying is promoted by the air flow that emerges from the ring nozzle 39.
  • the air flow of the central channel 41 supports the promotion of this thread bulge and prevents the housing bore from becoming clogged.
  • the flow conditions in the thread channel 9 can be influenced by the shape of the thread channel 9. As shown in the exemplary embodiment according to FIG. 7, the thread channel 9 becomes thinner towards the thin end of the rotating body 10, so that the flow velocity increases here.
  • FIGS. 9 and 10 show a thread take-off device and its use for the production of a nonwoven.
  • FIG. 8 can also be applied to the thread take-off device according to FIG. 9.
  • the description of the exemplary embodiment according to FIGS. 7 and 8 applies to its structure and function with the following deviations:
  • the cylindrical extension 43 of the housing 12 is fitted into a holding device 53, which is fixed stationary over a conveyor belt 54.
  • the thread take-off device is mounted with a horizontal axis.
  • the thread channel 16 at the outlet therefore bends downwards.
  • the vault conveyed in the thread channel 16 is conveyed and accelerated by the injectors 21.
  • the injectors have a blowing component in the conveying direction.
  • the arrangement and orientation and blowing speed of the injectors can be such that the arch is pulled out again into a smooth thread.
  • the thread channel 16 can be arranged with respect to the winding body 10 so that the normal plane of the thinnest cross section intersects the thread channel 16 in the longitudinal direction. In this case, the thread would be removed from the winding body 10 overhead when threading. After the thread had been put on, however, the vault would be pulled out again into a thread with the help of the injectors and then pulled off tangentially. It is shown here that the thread channel 16 initially runs axially after the normal plane with the thinnest cross section and then only bends downward. Therefore, the thread is discharged from the winding body 10 as an arch.
  • the blowing injectors are arranged in such a way that the bulge is no longer elongated, but is placed on the conveyor belt as a tangle of fibers.
  • the housing 12 has an insertion slot 36.
  • This insertion slot extends secantially through the housing so that a thread is inserted into the thread insertion slot and with a wrap angle of e.g. 60 ° in circumferential contact can be applied to the winding body 10.
  • the thread take-off device is mounted above a conveyor belt 54.
  • the conveyor belt 54 is perforated.
  • the thread channel 16 is directed onto the conveyor belt.
  • a suction device 55 is located below the conveyor belt.
  • the holding device can be moved essentially perpendicularly (arrow 56) to the conveying direction of the conveyor belt and can preferably be pivoted back and forth about a vertical axis 57 passing through the thread insertion slot 36.
  • two multifilament threads 59 are spun from two nozzles 58 and drawn off by a common draw-off mechanism 60.
  • the take-off speed is so high (more than 4000 m / min) that the threads essentially are fully oriented.
  • the threads, coming from the take-off mechanism 60 are placed together through the slot 36 on the take-up body 10 and then permanently withdrawn from the thread take-up mechanism. Since the thread take-off device is pivoted back and forth about the vertical axis 57, the thread inlet conditions do not change as a result of this pivoting.
  • the thread bulge leaving the thread channel 16 is deposited on the conveyor belt to form a tangled fleece.
  • the fleece is laid flat and pressed against the conveyor belt by the air currents caused by the suction device 55.
  • the conveyor belt conveys the fleece that is continuously produced in this way for further processing, for example for compacting and gluing.
  • the exemplary embodiment according to FIG. 11 can also be used for the production of a thread fleece or for other thread depositing for further transport, further processing or the waste disposal of a fiber thread.
  • 11 essentially corresponds to the exemplary embodiment according to FIGS. 7 and 8 and 9 and 10.
  • the description of the aforementioned exemplary embodiments therefore also applies to the exemplary embodiment according to FIG. 11 with the following deviations:
  • the housing 12 has a wide slot 61 on its circumference. This slot extends over part of the circumference with such a central angle that the thread can be laid through this slot 61 with a wrap around the winding body 10.
  • a casing 62 is displaceable on the housing 12.
  • the jacket is pressed into its outer right position by springs 63. The force of the springs can be adjusted by screws 64.
  • the jacket 62 has the insertion slot 36 on part of its circumference.
  • the insertion slot 36 is considerably narrower than the slot 61.
  • the insertion slot 36 is so narrow that it only allows the thread to be conveniently inserted, but otherwise the thread in a defined normal level. Otherwise, it extends essentially over the same circumferential area as the slot 61.
  • the insertion slot 36 is designed in such a way that in the outer right position, which is shown in FIG. 11, it lies essentially on the normal plane and the working area of the winding body, that has the largest diameter.
  • the thread guide 65 is fastened to the jacket 62.
  • the thread 59 coming from the take-off mechanism 60 (indicated) is clamped between the fixed thread guides 66 and 67 on the one hand and the thread guide 65 movable with the jacket 62 on the other hand.
  • the jacket 62 is shifted to the left against the force of the springs 63 as the thread tension increases.
  • the width of the slot 61 determines the working area on which the thread can be wound on the winding body 10.
  • the thread is wound on the winding body 10 at a higher or lower winding speed.
  • the thread tension can be controlled by adjusting the position of the jacket 62. In the exemplary embodiment according to FIG. 11, this setting regulates the thread tension.
  • the thread tension increases, the thread guide 65 and thus also the jacket 62 are shifted to the left.
  • the insertion slot 36 lies on a normal plane with a smaller diameter.
  • the winding speed drops and the thread tension decreases. There is therefore an equilibrium state between the thread tension on the one hand and the spring force 63. Therefore, the nominal value of the thread tension can be specified by setting the spring forces 63. This ensures that the thread tension, which is given to the thread by the take-off device, is always sufficient to avoid winders on the take-off mechanism 60.
  • the exemplary embodiment according to FIG. 12 can also be used to produce a thread fleece from a plurality of threads, for other thread storage for further transport, for further processing or waste disposal of a tangle of fibers, and in particular for thread take-off in winding machines and doffers during the bobbin change and for applying the threads to the Spool change can be used on the empty spindle inserted several empty tubes.
  • a corresponding winding machine is e.g. shown in Fig. 3 of EU-A 85103295.3 (Bag. 1393).
  • the thread take-off device according to FIG. 12 is composed of several thread take-off devices for one thread each, each unit essentially corresponding to the embodiment according to FIGS. 7 and 8 and 9 and 10. In the following description, reference is also made in particular to FIG. 8.
  • each rotating body 12 has a housing which is composed of several identical housing parts 12.1, 12.2, 12.3.
  • a rotating body 10.1, 10.2, 10.3 is rotatably mounted in each housing part.
  • Each rotating body is driven by a turbine 46.1, 46.2, 46.3.
  • each rotating body is equipped with a bead 11. This creates an annular channel 40 in each housing on the circumference of each of the turbine wheels 46.1-46.3.
  • Each of these annular channels 40 is supplied with compressed air by a compressed air channel 51.1, 51.2, 51.3.
  • Each rotating body has a central channel 41.1, 41.2, 41.3.
  • the shafts 45.2, 45.3 of the thread take-off units which are aligned in front of the thin end of the rotating body 10.1 of the first thread take-off unit, are designed as a hollow shaft. Therefore, the central channels 41.2, 41.3 of these units extend through the shafts and the rotating bodies.
  • the central channel 41.1 of the first thread take-off unit only extends through the end face 47.
  • the other end face 48 of the turbine wheel 46.1 is closed and receives the shaft 45.
  • the shaft 45 is - as also shown in FIG. 7 - in the socket 49 Lid mounted to the housing part 12.1.
  • the bearings 31.2 and 31.3 of the other two thread take-off units are each received by the preceding housing 12.1 and 12.2. These bearings 31.2, 31.3 must have an enlarged diameter so that they can each accommodate the hollow shafts 45.2 and 45.3 with the central channels extending therein.
  • the last thread take-off unit has a thread channel 16 which is aligned with the central channels 41.1-41.3 and which then kinks from the horizontal direction into a vertical direction.
  • This thread channel 16 can be aligned with injectors or other air nozzles 21 to generate an increased air flow.
  • the thread inlet pipes 6.1 to 6.3 can also be replaced by insertion slots, e.g. are indicated in Fig. 9 with reference numerals. These insertion slots are introduced into the housing on a normal plane and extend so far through the housing that the thread with partial wrap can be applied to the respective rotating body 10.1 to 10.3. With regard to the right-hand unit, such an insertion slot 36 is indicated in the housing jacket 12.3, it being quite expedient for air guidance to also equip the housing with a thread inlet connector 6.3 through which the thread insertion slot 36 likewise extends. If the thread take-off device is not to be equipped for sucking in the threads, but at least also for applying the threads to the respective rotating bodies, all housing sections 12.1 to 12.3 have such a thread insertion slot.
  • the thread take-off device shown in FIG. 12 can be adapted to any desired number of threads by arranging further units between the two end units which correspond to the middle unit.
  • Fig. 13 the embodiment of which otherwise essentially corresponds to that of Fig. 9, shows another way to pull off the thread tangentially.
  • An end piece 68 is attached to the housing 12.
  • the thread channel 15 ends in a conical, rounded blind hole 69.
  • the end piece 68 also has a wide incision 70 on its edge.
  • the incision is rounded towards the blind hole and lies in the installed state in a normal plane in the area of the thinnest end of the rotating body 10.
  • the incision 70 is aligned with a thread channel 16, which is flanged to the housing end piece 68 and is fitted with injectors 21.
  • the cross section of the thread channel 16 is essentially adapted to the adjacent cross section of the incision 70 with which the incision 70 opens into the thread channel 16.
  • the thread is held in front of the thread inlet 6 and sucked in.
  • the compressed air connection 51 is already pressurized with compressed air, so that the rotating body 10 is set in rotation. Its peripheral speed corresponds at least to the thread speed.
  • the thread now comes into circumferential contact with the rotating body and is formed into windings that wrap around the rotating body.
  • the turns are conveyed to the thin end.
  • the windings collect and as a result of the air flow that comes through the central channel 41 - starting from the turbine wheel 46 - and as a result of the air flow in the thread chamber 15, the vault falling from the rotary body 10 is not only collected in the blind hole 69, but also at the same time promoted in the direction of the incision 70 and the thread channel 16.
  • the bulge is detected by the injectors 21 and placed under a certain tension. This causes the vault to pull out into a smooth thread again. Since the thread channel 16 lies in a normal plane which cuts the rotating body in the region of its thinnest end, the thread is now drawn off tangentially from the rotating body, as indicated by line 71.
  • the thread windings which are formed in the normal plane of the thread inlet in the rotating body now continue to slip due to the conicity, the low friction and the air flow at the cone, the thread tension above the thread inlet 6 by adjusting the speed of the rotating body 10 as desired and can be set so high that the - not shown here - Delivery roll no winder arise.
  • the turns slipping on the cone on the other hand, lose their thread tension, so that the thread in the thread channel 16 can easily be conveyed.
  • the air flow required for this can be generated with the injectors 21 without any particular effort.
  • the thread take-off device is suitable for depositing a thread in the form of a fleece, felt or as waste.
  • the embodiment according to FIG. 14 essentially corresponds to the embodiment according to FIG. 13 with regard to the thread guidance, and essentially corresponds to the embodiment according to FIG. 11 with regard to the regulation of the thread tension.
  • This thread take-off device can be used in particular for waste disposal or for the further processing of the thread.
  • the housing 12 has a bore which is cylindrical in its upper part 9 and conical in its lower part 30.
  • the housing 12 is closed on its upper end by a cover 13.
  • the winding body 10 is part of a structural unit with the shaft 45, the turbine wheel 46 and the winding body 10.
  • the shaft 45 is fixedly connected to the free end face 47 of the turbine wheel and is freely rotatably supported in the bushing 49 by two ball bearings 31.
  • the turbine wheel 46 consists of the two end disks 47 and 48, between which the turbine blades 50 (section according to FIG. 8) are fastened, for example by welding.
  • the winding body 10 is seated on the end disk 48 of the turbine wheel 46.
  • the winding body 10 is a cone which has essentially the same conicity as that Conical bore 15 in the housing 12 has.
  • the winding body forms an annular-gap-shaped, conical thread chamber in this bore, which also tapers conically with its mean diameter toward the free end of the winding body 10.
  • the cone angle of the winding body 10 is smaller than the cone angle of the bore.
  • the width of the thread chamber also tapers towards the end of the winding body 10.
  • the winding body 10 has a bead 11 which forms a constriction with the cylindrical part of the bore in the housing 12.
  • the upper cylindrical part 9 of the bore in the housing 12 forms an annular channel 40 with and around the turbine wheel 46.
  • the compressed air channel 51 opens into this annular channel 40.
  • the compressed air channel 51 is directed essentially tangentially into the annular channel. Its orientation and the shape of its mouth is generally known in the construction of compressed air turbines and is not described in more detail here. Since the bead 11 of the winding body 10 forms a strong throttling resistance with the cylindrical chamber wall in the housing 12, the required air pressure can build up in the annular channel 40.
  • the turbine wheel can be driven at speeds of up to 10,000 rpm.
  • the blades 50 of the turbine wheel leave the outflow channel 52 free in the center of the turbine wheel.
  • the outflow channel is closed on the bearing side by the end plate 47.
  • the outflow channel 52 opens to the free end of the winding body 10 in its central channel 41, the end plate 48 also having a correspondingly large hole.
  • the pin 58 in the center of the end disk 47 is shaped such that the air passing between the blades 50 is deflected in the direction of the central channel 41 in the winding body 10.
  • the thread inlet 6 of the housing 12 On the side of the bead 11 facing away from the annular channel 40 is the thread inlet 6 of the housing 12.
  • the housing 12 has a wide slot 61 on its circumference. This slot extends over part of the circumference with such a central angle that the thread passes through this slot 61 can be placed with a wrap around the winding body 10.
  • a casing 62 is displaceable on the housing 12. The jacket is pressed into its outer right position by spring 63. The force of the springs can be adjusted by screw 64.
  • the jacket 62 has the thread inlet connector 6 on its circumference.
  • the thread inlet connector is directed essentially tangentially to the circumference of the rotating body 10 and its thread channel also extends through the jacket 62.
  • the thread inlet connector 6 can be populated with the indicated injectors 4, which cause a suction flow in the inlet connector.
  • the thread inlet nozzle 6 is designed so that it lies in the outer right position, which is shown in Fig. 14, substantially on the normal plane and the working area of the winding body, which has the largest diameter.
  • the thread guide 65 is fastened to the jacket 62.
  • the thread 59 coming from the take-off mechanism 60 (indicated) is clamped between the fixed thread guides 66 and 67 on the one hand and the thread guide 65 movable with the jacket 62 on the other hand.
  • the jacket 62 is shifted to the left against the force of the spring 63 as the thread tension increases.
  • the 14 provides for the thread to be drawn off tangentially.
  • An end piece is attached to the housing 12, in which the thread channel 15 ends in a conical, rounded blind hole 69.
  • the end piece 68 also has an outlet 70 which is aligned with the thread channel 16.
  • the thread channel 16 is on the housing end piece 68 flanged and filled with injectors 21.
  • the cross section of the thread channel 16 is essentially adapted to the adjacent cross section of the outlet 70, with which the incision 70 opens into the thread channel 16.
  • Outlet 70 and thread channel 16 lie in a normal plane through the winding body and in the region of its free end.
  • the thread is held in front of the thread inlet 6 and sucked in.
  • the compressed air connection 51 is already pressurized with compressed air, so that the rotating body 10 is set in rotation. Its peripheral speed corresponds at least to the thread speed.
  • the thread now comes into circumferential contact with the rotating body and is formed into windings that wrap around the rotating body. Threading is facilitated if the jacket 62 is moved to the left against the spring force 63 - in FIG. 14 - so that the thread initially runs onto a smaller diameter of the rotating body 10. After catching, the jacket is released into its right extreme position predetermined by the spring 63 and a stop.
  • the turns are conveyed to the thin end.
  • the crust falling from the rotary body 10 is not only collected in the blind hole 69, but at the same time also in the direction of the outlet 70 and the thread channel 16 promoted.
  • the bulge is detected by the injectors 21 and placed under a certain tension. This causes the vault to pull out into a smooth thread again. Since the thread channel 16 lies in a normal plane which cuts the rotating body in the region of its thinnest end, the thread is now drawn off tangentially from the rotating body, as indicated by line 71.
  • the thread turns on the rotating body continue to slide due to the taper and the low friction, the thread tension above the thread inlet 6 can be adjusted by setting the speed of the rotating body 10 as desired and so high that no winder is formed on the delivery godet 60.
  • the turns slipping on the cone lose their thread tension, so that the thread, e.g. is guided into the waste or onto a collection or transport container in which the thread channel 16 can easily be conveyed.
  • the air flow required for this can be generated with the injectors 21 without any particular effort.
  • the thread can also be drawn off from another delivery plant.
  • the thread pulling device can also serve to regulate the thread pulling force between the delivery godet 60 and the thread pulling mechanism.
  • the thread is placed around the thread guides 66, 67, 65 in the manner shown, which serve to measure the thread tension.
  • the width of the slot 61 determines the working area on which the thread can be wound on the winding body 10.
  • the thread is wound on the winding body 10 at a higher or lower winding speed.
  • the thread tension can be controlled and regulated by adjusting the position of the jacket 62.
  • the thread guide 65 and thus also the jacket 62 are shifted to the left.
  • the thread inlet connector 6 lies on a normal plane with a smaller diameter.
  • the winding speed drops and the thread tension decreases. There is therefore an equilibrium state between the thread tension on the one hand and the spring force 63. Therefore, the target value of the thread tension can be specified by setting the spring force 63. This ensures that the thread tension given to the thread by the take-off device is always sufficient to avoid winders on the take-off mechanism 60 or to exert constant thread forces on the thread to influence the thread properties.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP87100760A 1986-01-30 1987-01-21 Dispositif de tirage de fil Expired - Lifetime EP0230974B1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE3602765 1986-01-30
DE19863602765 DE3602765A1 (de) 1986-01-30 1986-01-30 Fadenabsauggeraet zum abziehen eines kontinuierlich laufenden fadens
DE3611740 1986-04-08
DE19863611740 DE3611740A1 (de) 1986-04-08 1986-04-08 Fadenabzuggeraet
DE3613040 1986-04-17
DE19863613040 DE3613040A1 (de) 1986-04-17 1986-04-17 Fadenabzuggeraet
DE3614864 1986-05-02
DE3614864 1986-05-02

Publications (3)

Publication Number Publication Date
EP0230974A2 true EP0230974A2 (fr) 1987-08-05
EP0230974A3 EP0230974A3 (en) 1988-08-10
EP0230974B1 EP0230974B1 (fr) 1991-07-31

Family

ID=27433513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87100760A Expired - Lifetime EP0230974B1 (fr) 1986-01-30 1987-01-21 Dispositif de tirage de fil

Country Status (3)

Country Link
US (1) US4784344A (fr)
EP (1) EP0230974B1 (fr)
DE (1) DE3771736D1 (fr)

Cited By (3)

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DE19925163A1 (de) * 1999-06-01 2000-12-14 Zinser Textilmaschinen Gmbh Verfahren und Vorrichtung zum Transportieren eines ununterbrochen gelieferten Abfallfadens zu einem Abfallbehälter im Bereich einer Textilmaschine
EP3659953A1 (fr) * 2016-10-20 2020-06-03 TMT Machinery, Inc. Robot d'enfilage de fil
CN113993803A (zh) * 2019-06-19 2022-01-28 希伯莱因股份公司 用于纺织机械的抽吸装置、带抽吸装置的纺织机械、两个旋风元件的应用以及用于抽吸纱线的方法

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US5110061A (en) * 1990-12-03 1992-05-05 Berry Roger P Pneumatic reel fiber pay out system
US5475907A (en) * 1994-08-12 1995-12-19 American Line Corporation Apparatus and method for forming coils of yarn and for heat setting the same
US6032844A (en) * 1997-07-31 2000-03-07 E. I. Du Pont De Nemours And Company Air jet piddling
US6131785A (en) * 1998-08-27 2000-10-17 E. I. Du Pont De Nemours And Company Air jet piddling
US6685952B1 (en) 1999-06-25 2004-02-03 Unilever Home & Personal Care Usa, Division Of Conopco, Inc. Personal care compositions and methods-high internal phase water-in-volatile silicone oil systems
JP5240153B2 (ja) * 2009-10-01 2013-07-17 住友電気工業株式会社 光ファイバ吸引装置および吸引方法
SG11201505068RA (en) 2012-12-28 2015-08-28 Kuraray Co Drawing device and drawing method

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GB861140A (en) * 1957-10-25 1961-02-15 Ici Ltd Treatment of yarns
DE1911735A1 (de) * 1968-10-14 1970-06-04 Rosen Karl I J Fadenspeicher- und -liefervorrichtung fuer Textilmaschinen
FR2302951A1 (fr) * 1975-03-07 1976-10-01 Barmag Barmer Maschf Dispositif de transport pour cables de fibres chimiques
DE2633474A1 (de) * 1976-07-26 1978-02-09 Fourne Verfahren und maschinen zum speichern von textilkabeln zur kontinuierlichen ablage in behaelter oder schneiden zu fasern
DE2939716A1 (de) * 1979-09-29 1981-04-16 Lucke-Apparate-Bau GmbH, 7947 Mengen Vorrichtung zum fortlaufenden ablegen von zusammenhaengenden garnschleifen
DE3115371A1 (de) * 1981-04-11 1982-02-25 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid "verfahren und vorrichtung zum ablegen eines kontinuierlich gefoerderten faserkabels in eine spinnkanne"

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19925163A1 (de) * 1999-06-01 2000-12-14 Zinser Textilmaschinen Gmbh Verfahren und Vorrichtung zum Transportieren eines ununterbrochen gelieferten Abfallfadens zu einem Abfallbehälter im Bereich einer Textilmaschine
EP3659953A1 (fr) * 2016-10-20 2020-06-03 TMT Machinery, Inc. Robot d'enfilage de fil
CN113993803A (zh) * 2019-06-19 2022-01-28 希伯莱因股份公司 用于纺织机械的抽吸装置、带抽吸装置的纺织机械、两个旋风元件的应用以及用于抽吸纱线的方法
CN113993803B (zh) * 2019-06-19 2023-12-12 希伯莱因股份公司 用于纺织机械的抽吸装置、带抽吸装置的纺织机械、两个旋风元件的应用以及用于抽吸纱线的方法

Also Published As

Publication number Publication date
EP0230974A3 (en) 1988-08-10
DE3771736D1 (de) 1991-09-05
EP0230974B1 (fr) 1991-07-31
US4784344A (en) 1988-11-15

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