EP0528884B1 - Procede et dispositif pour la pose automatique d'un ruban de fibres sur une machine textile - Google Patents

Procede et dispositif pour la pose automatique d'un ruban de fibres sur une machine textile Download PDF

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Publication number
EP0528884B1
EP0528884B1 EP91909136A EP91909136A EP0528884B1 EP 0528884 B1 EP0528884 B1 EP 0528884B1 EP 91909136 A EP91909136 A EP 91909136A EP 91909136 A EP91909136 A EP 91909136A EP 0528884 B1 EP0528884 B1 EP 0528884B1
Authority
EP
European Patent Office
Prior art keywords
sliver
beginning
tape
rollers
feed
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.)
Expired - Lifetime
Application number
EP91909136A
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German (de)
English (en)
Other versions
EP0528884A1 (fr
Inventor
Albert Kriegler
Michael Strobel
Klaus Franz
Edmund Schuller
Rupert Karl
Michael Ueding
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25893312&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0528884(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19904015938 external-priority patent/DE4015938A1/de
Priority claimed from DE19904035439 external-priority patent/DE4035439A1/de
Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Priority to EP95106898A priority Critical patent/EP0668380B1/fr
Priority to EP95120117A priority patent/EP0709501B1/fr
Priority to EP96119796A priority patent/EP0770717B1/fr
Publication of EP0528884A1 publication Critical patent/EP0528884A1/fr
Application granted granted Critical
Publication of EP0528884B1 publication Critical patent/EP0528884B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/18—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for supplying bobbins, cores, receptacles, or completed packages to, or transporting from, paying-out or take-up stations ; Arrangements to prevent unwinding of roving from roving bobbins
    • D01H9/185—Transporting cans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • B65H67/0428—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements for cans, boxes and other receptacles
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/005—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing empty packages or cans and replacing by completed (full) packages or cans at paying-out stations; also combined with piecing of the roving
    • D01H9/008—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing empty packages or cans and replacing by completed (full) packages or cans at paying-out stations; also combined with piecing of the roving for cans
    • 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 present invention relates to a method for automatically applying a sliver to a textile machine having a feed device (cf. US Pat. No. 4,838,018) or device, in which the sliver is transferred to the feed device, and to a device for automatically applying a sliver a textile machine or device having a feed device, with a belt feeder for introducing the sliver into the feed device and with a belt start preparation device which has two parts which are movable relative to one another, one of which is formed by the belt feeder, while the other cooperates with the belt feeder to perform this procedure.
  • the above-mentioned device features go back to an in-house state of the art.
  • This object is achieved in that the beginning of the tape to be transferred is rotated about its own axis before being transferred to the feed device for sharpening.
  • a “textile machine” is to be understood as any textile machine that processes fiber slivers. These include e.g. Draw frames and spinning machines such as ring, air, false-wire and open-end spinning machines, but other textile machines to which fiber slivers are fed for processing can also be suitable, such as Circular knitting machines to which fiber tapes are fed for the production of pile fabrics and carpets.
  • Working elements can thus be a drafting system (e.g. on a draw frame or air spinning machine), a spindle (e.g. on a ring spinning machine), an opening roller (on an open-end spinning machine), a needle cylinder (on a circular knitting machine) and the like.
  • the place where these organs are located is hereinafter referred to as the "job”.
  • a textile machine in which the subject matter of the invention can be used has more than one job, but the invention is not restricted to this.
  • sliver is to be understood as any sliver composed of fibers, irrespective of whether the sliver has a certain rotation, as is the case with sliver, or not.
  • feed device is taken to mean that device which picks up the sliver and feeds it to the working organ of the textile machine.
  • the beginning of the belt to be transferred can be exposed to an air stream.
  • the prepared beginning of the tape is expediently solidified in its shape. This can also be done in various ways, e.g. with the help of a spray or by freezing. It is particularly advantageous if the beginning of the tape is solidified by applying a medium which volatilizes without residue after a predetermined time.
  • the sliver to be fed is picked up in a defined position and then rotated for sharpening in its axis, whereupon the sliver thus prepared is brought in front of and fed into the feed device, whereupon a defined sliver length is fed into the feed device and the insertion success is checked in order to if the beginning of the tape fails, repeat the insertion process.
  • a high contact security is achieved, since the sliver is given an optimal length and shape by the preparation and is also introduced into the feed device over a predetermined length.
  • the tape start preparation device (9) is designed as a rotating device by which the tape start to be transferred can be rotated about its own axis and is thereby pointed. This will The beginning of the tape to be transferred is sharpened, ie it is given a defined shape which is particularly suitable for insertion into the feed device.
  • the belt feeder of the device according to the invention has a controllable clamp which is movable transversely to the sliver located in the receiving position. This ensures that the sliver cannot inadvertently change its position relative to the sliver feeder after it has been taken up.
  • a design of the controllable clamp of the belt feeder as a pair of rollers has been shown to be particularly expedient, with the aid of which the beginning of the belt can be fed to the feed device and the rollers of which can be removed radially from one another in order to release the sliver again after it has been inserted into the feed device. It is not necessary for both rollers of the pair of rollers to be driven. Rather, it has proven to be particularly advantageous if the pair of rollers has only one drivable roller, the other roller being able to be carried along by the drivable roller.
  • a belt start preparation device is provided with two parts which are movable relative to one another, one of which is formed by the belt feeder.
  • the tape feeder of the tape start preparation device is preferably deliverable, while the part of the tape start preparation device cooperating with the tape feeder is stationary.
  • the tape start preparation device expediently has a rotationally drivable insertion funnel in order to guarantee reliable insertion of the tape start into this tape start preparation device. Due to the rotating drive of the insertion funnel, the beginning of the tape is sharpened, which makes insertion into the feed device particularly easy and safe.
  • the tape start preparation device has a controllable suction nozzle, in which at least one compressed air nozzle opens with both an axial and a tangential component. A further support of the air flow for sharpening the beginning of the tape is achieved if the suction nozzle has a helical inner contour. Thanks to this controllable suction nozzle, the beginning of the band can be pneumatically pointed and thus brought into the desired shape.
  • the tape start preparation device expediently has a tape cutting device which can be designed as a cutting device in a simple embodiment of the subject of the invention. If the tape feeder has a tape length measuring device, this can be designed as a cutting device. Alternatively or additionally, it can also be provided that the cutting device is arranged in the suction nozzle.
  • the belt cutting device has a controllable clamp which cooperates with the belt feeder and is connected in a control manner to the drive of the rollers of the belt feeder. In this way, by turning back the rollers, the band between the pair of rollers and the clamp can be separated by pulling apart.
  • the tape start preparation device can, however, also be designed differently and, in accordance with another advantageous embodiment, uses a clamp which cooperates with the tape feeder in the form of a pair of rollers which are driven in opposite directions and are arranged at an angle to one another, so that these rollers also allow the sliver to be sharpened.
  • the pair of rollers of the strip feeder is part of the strip separation device.
  • a drive for changing the relative distance is assigned to the belt feeder and the clamp working together with the belt feeder.
  • the strip separating device has a further controllable clamp connected upstream of the pair of rollers, as a result of which increased safety when separating the strip is achieved.
  • the sliver should not be impaired by the further clamp connected upstream of the pair of rollers.
  • the further clamp connected upstream of the pair of rollers has two clamping elements with interlocking profiles, which are preferably rounded. It is useful if one of the two interlocking profiles has a concave cross section and the other of the interlocking profiles has a convex cross section.
  • the two controllable terminals together form the belt cutting device, which is why it is advantageous if these two terminals can be controlled synchronously.
  • the minimum distance between the two clamps of the sliver separating device is predetermined by the stack length of the fibers of the sliver. It has proven to be advantageous if the distance between the two clamps of the belt cutting device can be increased substantially to twice the stack length.
  • the relative movement between the two clamps can be achieved by any movement.
  • an embodiment is particularly advantageous in which at least one of the two clamps is pivotably mounted to increase the minimum distance.
  • the sliver start preparation device can have a sliver end fixing device which can be brought into action on the sliver end.
  • this can be designed differently, but training as a spray device has proven to be particularly advantageous.
  • the spray device With the help of the spray device, the sliver is sprayed before being introduced into the feed device and thereby solidified.
  • the spray device can be designed as an icing device.
  • the invention increases the safety in the automatic application of the sliver to the feed device of a textile machine in a simple manner. This ensures that downtimes are reduced since it is not necessary for the operator to be immediately on hand when a sliver runs out to check the sliver application.
  • An open-end spinning device 1 is usually part of an open-end spinning machine 16, which has a plurality of similar open-end spinning devices 1 arranged next to one another on one or both longitudinal sides of the machine.
  • Each open-end spinning device 1 has a spinning element which, in the embodiment shown, is designed, for example, as a spinning rotor 10.
  • the spinning rotor 10 is mounted in a known manner by means of a shaft 100 and is driven in the exemplary embodiment shown by means of a tangential belt 101.
  • the spinning rotor 10 is arranged in a rotor housing 102, the interior 103 of which is connected via a suction pipe connection 104 to a vacuum source, not shown.
  • a brake 11 can be delivered to the shaft 100 of the spinning rotor, which brake is connected to an actuating lever 13 via a linkage 12 which is only indicated schematically. If the free arm of the actuating lever 13 is acted upon in the direction of the arrow P 4 , the brake 11 comes to bear against the shaft 100 of the spinning rotor 10, so that the latter is braked.
  • the mechanism, which consists of brake 11, linkage 12 and actuating lever 13, is suitably acted upon by an elastic element against the direction of arrow P 4 , that is to say in the direction of arrow P 5 , so that when an application is ended in the direction of arrow P 4, the brake 11 returns to its release position.
  • the elastic element which acts on the mechanism consisting of brake 11, linkage 12 and actuating lever 13, is designed as a compression spring 130, which is supported on the actuating lever 13 on its arm facing the linkage 12 and on a machine part, not shown.
  • Feed device 2 For feeding fibers into the spinning rotor 10 is one Feed device 2 is provided, which in the exemplary embodiment shown consists of a delivery roller 20 and a feed trough 21, which is pivotably mounted and is pressed elastically against the delivery roller 20 by a compression spring 22. Downstream of the delivery roller 20 is a dissolving roller 24 arranged in a housing 23, which during normal production combs fibers (not shown) from a sliver 4 fed to it with the aid of the feed device 2 from a can 41, which fibers pass through a housing 23 in the fiber feed channel 25 extending the spinning rotor 10 are fed to the spinning rotor 10.
  • the fibers are deposited in the usual way on a fiber collecting surface in the spinning rotor 10, from where they are taken up by the end of a thread 44 and continuously bound into the end thereof.
  • the thread 44 is drawn off through a thread draw-off tube 26 with the aid of a pair of draw-off rollers 27 and wound onto a spool 28 which is driven in a known manner by a winding roller 29.
  • a thread monitor 14 which monitors the spun thread 44.
  • Thread tension bow Thread tension bow
  • traversing thread guide thread return device
  • thread end preparation device thread end preparation device
  • the open-end spinning device 1 is covered by a cover 105, which has a feed hopper 106, and is supported by a machine frame 107.
  • a signal device 15 is attached to the cover 105, for example in the form of a signal lamp, which is connected in terms of control to the thread monitor 14 (usually with the interposition of a control device, not shown).
  • a belt feeder 3 is fastened to the machine frame 107 below the rotor housing 102. In the embodiment shown, this is done with the aid of a guide 30, in which the belt feeder 3 is slidably mounted transversely to the machine longitudinal direction.
  • the belt feeder 3 has a rail or guide rod 300 which extends through the guide 30 and carries a stop 301 at its machine-side end. At its end facing away from the stop 301, the guide rod 300 carries a band holder 31 which has two band holders arranged at a distance from one another.
  • the tape holder 32 is designed as a helical tape guide and has a slot 322 between its coils 320 and 321, which extends radially outwards from the guide area for the fiber tape 4 enclosed by the coils 320 and 321.
  • the latter band holder 33 At a lateral distance a, which has a size that allows the sliver 4, which is delivered in a can 40, to be received between the band holders 32 and 33, is the latter band holder 33.
  • This is designed as a clamp according to FIG. 2 and consists of a fixed with the guide rod 300 connected to the clamping element 330 and a second clamping element 331 which is movably arranged for this purpose.
  • the clamping element 331 is acted upon by a compression spring 332 which in turn is supported on a spring receptacle 333 which is carried by the guide rod 300.
  • the clamping element 331 is thus held elastically in contact with the clamping element 330.
  • the free ends 334 and 335 of the clamping elements 330 and 331 are designed such that they move further and further apart from one another towards their free end. These two ends 334 and 335 thus form an insertion guide, which tapers in the transverse direction of the band course between the two band holders 32 and 33 and thus the automatic threading of the fiber band 4 in the direction the arrow P 3 (see Figure 1).
  • the belt feeder 3 is - as FIG. 1 clearly shows - so high above the can 41 that the sliver 4 extending from the receiving position, which is below the feeding device 2, but above the can 40, to the open-end spinning device 1 via others Cans 41 is guided away and can not come into contact with the sliver 42 which is located in the can 41 placed between the feeding device 2 and the can 40 and which usually extends to above the upper edge of the can 41.
  • a tape feeder 5 is provided to accommodate the sliver 3 extending between the two sliver holders 32 and 33.
  • this consists of a controllable clamp in the form of a pair of overhung rollers 50, 51, of which the roller 50 can be driven by a motor 500 with the interposition of a clutch 501, while the roller 51 is designed as a loose roller which is driven by the driven roller 50 during operation via the sliver 4 inserted into the pair of rollers.
  • This roller 51 which is designed as a loose roller, can be removed from the roller 50 by pivoting, so that a wedge-shaped gap 52 is formed between the two rollers 50 and 51.
  • the pivot mechanism for the roller 51 has not been shown in FIGS. 1 and 2.
  • the belt feeder 5 is also pivotally mounted as a whole on a rod 53 (see pivot point 530 in FIG. 2).
  • An arm 54 extends laterally from the belt feeder 5 and is connected in an articulated manner to the armature 540 of an electromagnet 541.
  • a new can 40 While the spinning station is still operating normally, a new can 40 must already be provided and the sliver 4 must be inserted into the sliver feeder 3 so that when the old sliver runs out, a new sliver is already ready to be taken up by the sliver feeder 5 and to be presented and handed over to the open end.
  • Spinning device 1 is provided.
  • the new sliver 4 is removed from the can 40, which is essentially placed under the sliver 3, and inserted with its beginning (beginning of the sliver 43 - FIG. 2) into the sliver holder 33 above the can, which is done automatically or by hand - Can be done by a simple movement in the direction of arrow P 3 (Fig. 1).
  • the thread monitor 14 If the old sliver 4 now runs out, the thread monitor 14 is actuated since the thread 44 breaks in the absence of the sliver 4. The thread monitor 14 sends a signal to the signal device 15 of the open-end spinning device 1 in the usual way.
  • the belt feeder 5, which is initially in a rest position 5 ', is caused by this signal to move transversely from the rest position 5' (see FIG. 1) to that in the receiving position located sliver 4 to move into the tape take-up position ( Figure 2).
  • the two rollers 50 and 51 are spread apart from one another and form a wedge-shaped gap 52, with which they receive the fiber sliver 4 with its sliver end as the new sliver start 43 between the two sliver holders 32 and 33.
  • the roller 51 is moved against the roller 50, so that the sliver 4 is clamped between the two rollers 50 and 51.
  • the belt feeder 5 is then brought in front of the feed device 2 of the open-end spinning device 1, the electromagnet 541 being excited and the rollers 50 and 51 being pivoted about the pivot point 530, so that this pair of rollers is arranged at right angles to the rod 53 (original position 5 "- Dashed representation in FIG. 2).
  • the fiber band 4 with the band start 43 is pulled out of the band holder 33.
  • the band feeder 5 moves up to the feeding device 2, the fiber band 4 can be unhindered by the band holder 32 slip through.
  • the sliver 4 can remain in the tape holder 32 for any length of time, namely until it is unthreaded - automatically or by hand at any time, for example when a new sliver is to be inserted into the tape feeder 3, since its axial mobility is ensured by the Band holder 32 is not affected.
  • a feed hopper 106 in front of the feed device 2, which facilitates the introduction of the strip start 43 into the feed device 2.
  • the pair of rollers consisting of the rollers 50 and 51 is driven, so that the sliver 4 with its beginning of the band 43 passes between the delivery roller 20 and the feed trough 21 and is transferred to it, thereby making it Now the opening roller 24 can be fed.
  • you can Various methods and devices are used, as will be explained in more detail later.
  • the sliver feeder 5 is activated so that it releases the sliver 4 and can return to its basic position.
  • the pair of rollers consisting of rollers 50, 51 is stopped. This completes the tape application process.
  • a thread break was produced by the sliver 4 previously fed to the feed device 2.
  • the spinning process had thus been interrupted, so that now after the introduction of the new sliver 4, it has to be spun again.
  • This re-spinning is carried out in the usual way by cleaning the spinning element, returning a thread end suitable for spinning up to the fiber collecting surface of the spinning rotor 10 or other spinning element, fibers being supplied to the fiber collecting surface by switching on the feed device 2 by appropriate time control Tie the end of the thread, which is then drawn off again by the spool 28 and later by the pair of draw rollers 27 from the spinning rotor 10 or other spinning elements (eg friction spinning elements).
  • piecing methods that can be used in connection with the method and the device according to the invention, for which reason a detailed description of piecing is not given.
  • a prerequisite for a piecing process to be able to be carried out in the case of an open-end spinning device 1 is that the tape application process has been carried out successfully.
  • the application process is monitored and repeated if it has been determined that the application of the tape has failed. Success or failure can easily be determined by checking the sliver 4. If this is not drawn in by the feed device 2 after it has been handed over, it is not transported either, but stands still.
  • FIG. 8 shows a perspective view of part of a belt feeder 5 with the roller 50 driven by a motor (not shown in FIG. 8) and the roller 51, which is designed as a loose roller.
  • the aforementioned wedge-shaped gap 52 is formed between the overhung rollers 50 and 51.
  • the two rollers 50 and 51 are mounted in a housing 504, the side 505 of which faces the rollers 50 and 51 serves as a belt support and thus prevents that the sliver 4, especially when it is fed to the feeder 2, slip out of the pair of rollers 50, 51 can.
  • the two rollers 50, 51 are provided with a thread-like corrugation or profiling 506 and 511, which is helical.
  • the profiles are inclined to the surface lines of the rollers 50, 51 that they approach each other when the rollers 50, 51 rotate in the feed direction, ie in the direction of the beginning of the strip 43.
  • the roller 50 When the roller 50 is driven in the direction of the arrow P 19 , the roller 51 is driven via the sliver 4 in the direction of the arrow P 20 , with a force being exerted on the sliver 4 in the direction of the arrow P 21 , through which the sliver 4 in the direction is moved to the side 505 of the housing 504 which delimits the gap 52 and forms a band support.
  • the band support can also be designed in another suitable manner.
  • the receiving position for the fiber sliver 4 is determined by the sliver holders 32 and 33 in the working position.
  • the two band holders 32 and 33 are arranged essentially on the same horizontal plane.
  • the two tape holders 32 and 33 can also be arranged one above the other, whereby in principle nothing essential changes for the tape take-up by the tape feeder 5.
  • the belt feeder 5, which can possibly also be formed by the pair of rollers 50, 51 shown, then only has to be rotated by 90 ° in comparison to the embodiment shown in FIG. 1 for the reception of the fiber sliver 4.
  • the sliver holder 33 is designed as a clamp in the previously described embodiment. However, this is not absolutely a requirement. So the tape retention can also by other means such. B. suction air or a Velcro can be achieved. Both strap holders 32 and 33 can also be designed as restraining means. A solution is also possible in which both band holders 32 and 33 are designed both as a guide which allows axial movement and as a clamp which prevents the band holder 32 and 33 from slipping out unintentionally.
  • the sliver 3 is slidably attached to the open-end spinning machine 16. If the belt feeders 3 protruding laterally from the open-end spinning machine do not interfere, they can also be rigidly attached to the machine frame 107.
  • the belt feeder 3 is a separate device, but it is also possible to provide the receiving position in or on the can 40, etc. to provide and / or design the can 40 itself as a belt feeder 3 and to present the sliver 4 through the can 40 of the open-end spinning device 1 or other textile machine for reception by the belt feeder 5.
  • the beginning of the band 43 (which is formed by the end 430 of the band) is not fed unchanged to the open-end spinning device 1, but is still specially prepared for transfer to the feeding device 2. Because of external influences during the time from the insertion of the sliver 4 into the sliver holder 31 (FIG. 2) or also inside the can 40 or on the can edge, the sliver 4 can namely be moved or pulled out of the can 40 or 41, so that the state and / or the length of the sliver 4 changes. Thus, it is not always guaranteed that the beginning of the band 43, with which the sliver 4 is to be fed to the open-end spinning device 1, always has the same quality. In order to ensure here that the desired quality of the beginning 43 of the tape is nevertheless achieved, it is provided that that the beginning of the tape 43 is brought to a defined length. A tape start preparation device 9, as shown in FIG. 3, is particularly useful for this.
  • a controllable clamp 91 is assigned to the band holder 31 in the configuration as shown in FIG. 2, or in the configuration as shown in FIG. 3, or also in another embodiment, which can in principle be designed differently.
  • this clamp 91 is arranged stationary and has a carrier 910, at one end of which a stop 911 is arranged.
  • an electromagnet 914 is arranged on the carrier 910 and is connected to a counter-stop 916 via an armature 915.
  • This counter stop 916 can be brought into contact with the stop 911 or clamp a sliver 4 between it and the stop 911.
  • the armature 915 is guided by a spring support 912, which in turn is provided by the carrier 910 between the counter-stop 916 and the armature 915.
  • a compression spring 913 is supported at one end on the counter stop 916 and at the other end on the spring support 912. Is the electromagnet 914 de-energized, i.e. in the fallen state, the compression spring 913 acts on the counter stop 916, so that the sliver 4 is clamped between it and the stop 911. If, on the other hand, the electromagnet 914 is excited, the counter-stop 916 is removed from the stop 911 against the action of the compression spring 913, so that the sliver 4 is released.
  • the clamp 91 works together with the belt feeder 5.
  • a device is used as the belt feeder 5, which is designed essentially in the same way as the clamp 91.
  • a clamp 512 is arranged at its free end, which has a stop 571, with which a through-stop a compression spring 572 acted on counter-stop 573 cooperates.
  • the counter stop 573 is connected to the armature 574 of an electromagnet 575.
  • the armature 574 is guided by a spring support 576, which also supports the compression spring 572 acting on the counter stop 573.
  • a pinion 577 is mounted on the pivot axis 570, with which a toothed rack 578 which can be driven by a drive 579 cooperates and which can be moved back and forth in the direction of the double arrow P 16 .
  • the rack 578 with its drive 579 thus forms a drive for changing the relative distance between the terminal 91 and the terminal 512 of the belt feeder 5.
  • the two terminals can be controlled synchronously, at least with regard to the closing, in order to ensure the separation function.
  • the sliver 4 is then inserted by hand or by a suitable device into the two clamps (the clamp 512 consisting of stop 571 and counter-stop 573 and clamp 91). Then, by moving the rack 578 towards the stop 571, the clamp 512 of the belt feeder is pivoted so that it moves away from the clamp 91. The sliver 4, which is held in the clamps 91 and 512, is thus pulled apart until it breaks.
  • a minimum distance c is provided between the shown starting position of the clamp 512 and the clamp 91, which is equal to the staple length (average staple length) of the fibers contained in the sliver 4, i.e. is predetermined by the stack length of the fibers contained in the sliver 4.
  • the two clamps 91 and 512 are brought to such a distance d from each other that essentially corresponds to twice the (average) fiber stack length. This ensures that the sliver 4 can really tear.
  • a band start 43 is created in this way, which is particularly suitable for insertion into the feed device 2. Because the fiber ends are pretty are evenly distributed in the sliver 4, the tearing of the sliver 4 causes thinning and tapering of the beginning of the sliver 43, which is thus particularly suitable for insertion into the feed hopper 106 (see FIG. 1).
  • the sliver 4 is thus not only cut to length, but also sharpened at the same time.
  • the two electromagnets 914 and 575 and the drive 579 of the rack 578 are connected to the common control device 93, which ensures that the terminals 512 and 91 move apart the tape start preparation device 9 only takes place after the counter stops 573 and 916 abut against the stops 571 and 911, respectively.
  • a cutting device 34 As shown in Figure 2, it is also possible to cut the sliver 4, a cutting device 34, z. B. to arrange scissors or the like on an arm 302 of the guide rod 300 of the tape feeder 3.
  • This cutting device 34 simultaneously fulfills the task of a tape measuring device and can then be triggered manually or electrically in a manner not shown, if desired. If an electro-mechanical separation of the sliver 4 is not required, it may also be sufficient to provide only the arm 302 with a scale, not shown, for the dimension of the length of the sliver start 43, then shortening the sliver 4 using a simple one , can be done, for example, by hand in the place of the cutting device 34 shown in FIG. 2.
  • the cutting device 34 or the scale thus forms a tape length measuring device which is attached to the tape feeder 3 and by means of which the length of the tape start 43 desired for the tape application can be generated or checked.
  • the sliver can also be separated in other ways. This makes it possible to use an injector through which a medium is directed onto the fiber sliver (medium pulse). If necessary, the fiber sliver can also be burnt through, particularly in the case of natural fiber material, in which the risk of the fibers fusing is lower than in the case of synthetic fibers.
  • the separating device can be designed in various ways. Since a cutting device generates a rectangular profile of the band start 43, a device for pulling the fiber band 4 apart is particularly advantageous since it produces an essentially wedge-shaped band start 43. In the latter case, the tape cutting device is formed by the tape start preparation device 9.
  • the sliver 4 can also be pulled apart by turning the rollers 50, 51 backwards with the sliver 4 clamped by the clamp 91; an additional terminal 92 is then not required.
  • a tape length measuring device e.g. can be combined in the manner of a light barrier 962 (FIG. 4) which controls the rollers 50, 51 in such a way that the strip end 43 is located in the region of this light barrier 962.
  • the clamp 91 cooperating with the ribbon feeder 5 is connected via the control device 93 to the drive (motor 500) of the roller 50 of the ribbon feeder 5 for control purposes.
  • a monitoring device serving as a tape length measuring device can also be provided on the tape feeder 3, which monitors where the tape start 43 is located, and then the rollers 50, 51 drives in one direction or the other until the tape end 43 is at this monitoring point.
  • the monitoring point can be formed by a light barrier which, if desired, can be adjusted along the arm 302 in any desired position.
  • a belt feeder 5 formed by a clamp 512 one which is shown in FIG. 2 and which has two rollers 50 and 51 can also be used.
  • the tape feeder 5 is, as the above description shows, part of the tape start preparation device 9 and is movable relative to this. On the one hand, this is necessary in order to be able to pick up the sliver 4 in the receiving position and to be able to feed it to the feed device 2. On the other hand, this mobility is expedient in order to bring the sliver 4 to the desired length by pulling it apart.
  • the other part of the tape start preparation device 9 can also be movably mounted, this mobility can be dispensed with in view of the mobility of the tape feeder 5. For this reason, in the exemplary embodiment shown in FIG. 3, the part of the tape start preparation device 9 which cooperates with the tape feeder 5 is stationary and the tape feeder 5 can be delivered to this stationary part.
  • the relative mobility between the parts of the tape start preparation device 9 does not have to take place by pivoting one or both of its cooperating parts.
  • Other movements e.g. Thrust movements, rotary movements etc. are naturally also conceivable.
  • FIG. 4 shows a further modification of the device described, in which the belt feeder 5 with its rollers 50, 51 can be brought in front of the mouth 950 of a suction pipe 95.
  • the free strip end 430 is thinned and shortened by the suction draft prevailing in the suction pipe 95 or in the suction nozzle of the strip start preparation device 9, which can of course be switched on and off.
  • the suction train acting in the suction pipe 95 thus forms a pneumatic belt cutting device.
  • the belt feeder 5 is stopped at a minimum distance c in front of the mouth 950 such that it essentially corresponds to the average stack length of the fibers contained in the fiber band 4. Since all the fibers outside this area, which is defined by the minimum distance c, are no longer held by the rollers 50 and 51, they can be pulled out of the fiber sliver 4 and removed with a correspondingly strong and possibly turbulent air flow.
  • a cutting device 96 is additionally provided in the suction pipe 95 according to FIG.
  • This cutting device 96 has a knife 960 which, from a rest position in which it releases the interior of the suction pipe 95, can be moved transversely to the longitudinal course of the suction pipe 950 and cooperates with an anvil 961.
  • the anvil 961 is designed according to Figure 4 as a roller or cylinder and rotatably mounted about its axis.
  • the knife 960 is guided in the suction pipe 95 in a guide 951 and can therefore not perform any lateral movement apart from the stroke movement given to it.
  • the anvil 961 designed as a roller is elastically supported.
  • the knife 960 rotates the roller-like anvil 961 according to its predetermined stroke in each case by an angle of rotation ⁇ predetermined by the knife stroke.
  • the knife 960 cooperates with a different location on the roller-like anvil 961.
  • the anvil 961 is made of soft material in relation to the knife 960 and is therefore subject to greater wear. Due to the possibility of rotation (with each stroke by the angle of rotation ⁇ ) a different circumferential point of the Anvil 961 in the working area of knife 960, so that non-uniform wear of the anvil 961 is avoided.
  • the sliver 4 is inserted into the suction tube 95 so far that the end of the band 430 is passed between the knife 960 and the anvil 961 with certainty.
  • This can optionally be monitored by a length scanner (e.g. a light barrier 962) between a light source 963 and a photodiode 964.
  • This light barrier 962 is in control connection with the rollers 50 and 51 and the knife 960 via the control device 93 (see FIG. 3) and signals to these elements that the sliver 4 is in the correct position.
  • the rollers 50, 51 are stopped; the knife 960 is actuated and cuts the tape end 430. This is removed due to the prevailing suction draft. Due to the still prevailing negative pressure in the suction pipe 95, the remaining end of the strip is also exposed to the suction draft and thinned and thereby sharpened.
  • the thinned, new end of the tape is in principle optimally prepared for insertion into the feed device 2.
  • this can be additionally consolidated.
  • a nozzle 965 serving as a band end fixing device is provided for this purpose, which nozzle can spray a liquid suitable for solidification onto the beginning of the band 43.
  • the condition of the sliver 4 in the area of the beginning of the sliver 43 should deviate as little as possible from the normal sliver condition, ie if possible only have a pointed shape, but otherwise correspond to the normal sliver 4.
  • a medium that evaporates without residue after a short time is Particularly favorable, whereby the time should of course be sufficient for the introduction of the band beginning 43 into the feed device 2.
  • the band beginning 430 can be iced up with a medium which changes directly from the solid state to the gaseous state.
  • the nozzle 965 is designed as an icing device which, when an, for example, gaseous medium escapes, causes it to change to the solid state by icing and later - as mentioned - to return directly to the gaseous state.
  • the band end fixing device need not be designed as a spray device.
  • Other devices with which a fixing medium in the solid (or semi-solid), liquid or gaseous state can be applied to the band start 43 are also suitable for this purpose.
  • the tape feeder 5 together with the suction pipe 95 already forms a tape start preparation device 9 on its own, but also in combination with the cutting device 96. As described, this causes the tape end held back by the tape feeder 5 acting suction air flow an opening and partial dissolution of the tape end and thus a tapering or tapering of the same.
  • the preparation of the tape start in this embodiment is thus pneumatic and not by the movement of two elements of the tape start preparation device 9 or by turning the rollers 50, 51 of the tape feeder 5 backwards.
  • a cutting device 96 is also not required for the preparation of the tape catch 43, either if such is shown in Figure 4.
  • the two parts of the tape start preparation device 9 can also change their relative position to each other. Naturally, this can be done by moving the tape feeder 5 or by moving another part of the tape start preparation device 9 relative to the tape feeder 5 or else by simultaneously moving both the tape feeder 5 and another part 99 of the tape start preparation device 9.
  • the two rollers 50 and 51 - upstream of the strip 43 - are preceded by a clamp 92, which consists of a stationary clamping part 920 and a movable clamping part 922.
  • the two clamping parts 920 and 922 in the embodiment shown have interlocking profiles. According to FIG. 5, this is achieved in that the clamping part 920 has a concave clamping surface 921 and the clamping part 922 has a convex clamping surface 923.
  • these clamping surfaces 921 and 923 are provided with rounded profiles in order to ensure that the sliver 4 is retained gently.
  • a clamp 91 which is designed, for example, in the manner of the clamp shown in FIG. 3 and has a stationary clamping part (stop 911) and a movable clamping part (counter stop 916).
  • the two clamps 91 and 92 are controlled synchronously, at least for their closing movement, to ensure that when these two clamps 91 and 92 are moved apart, the sliver 4 is actually pulled apart.
  • the two clamps 91 and 92 are initially in a starting position, after the fiber sliver 4 has been inserted into the suction pipe 95 with the assistance of the negative pressure switched on, in which the two Clamps 91, 92 have a minimum distance c in the order of an average length of the staple fibers.
  • the fiber sliver 4 is then severed by moving the two clamps 91 and 92 apart. If this has happened, the roller 51, which was initially lifted from the roller 50 for the tearing apart of the fiber sliver 4, is returned to its clamping position, wherein the fiber sliver 4 is clamped between it and the roller 50. Now the belt feeder 5 is again approached to the clamp 91 and the beginning of the belt 43 is inserted into the suction pipe 95.
  • the suction pipe 95 has an opening in the form of an insertion funnel 952.
  • the negative pressure in the suction pipe 95 which can optionally be switched off for the duration of the tearing apart of the sliver 4 and then switched on during the renewed insertion of the sliver 4 into the suction pipe, now pulls fibers out of the beginning of the band 43 and thus gives the beginning of the band 43 a tapered shape.
  • the clamp 91 need not be arranged in front of the mouth of the suction pipe 95. If desired, the clamp 91 can also be arranged in the intake manifold, e.g. B. at the point at which the cutting device 96 is provided according to FIG. In this case too, the sliver 4 can be torn off by moving the tape feeder 5 and the clamp 91 apart, so that a tape start 43 of a defined length is produced.
  • the suction pipe 95 is rotatably supported, which is indicated by the arrow P 17 .
  • a drive motor 953 is provided which carries on its drive axle 954 a pinion 955 which engages with another pinion 956 which is arranged concentrically on the intake manifold 95 and connected to it.
  • the drive motor 953 is connected to the control device 93 in terms of control.
  • the rotation of the suction pipe 95 rotates the beginning of the band 43, to which the rotation is transmitted due to its small inside diameter and / or due to the relative arrangement of the suction pipe 95 to the rollers 50 and 51, as a result of which the beginning of the band 43 is solidified in its shape.
  • the suction pipe 95 is arranged with its axis g parallel, but offset laterally to the plane e.
  • the sliver 4 should have its full strength in the separation area, ie between the two clamps 92 and 91, so that the band end 43 produced is also defined in its shape within acceptable tolerances. According to FIG. 4, this check is carried out with the aid of a light barrier 962 in the intake manifold 95.
  • a scanning device 97 is provided for determining the strip thickness.
  • This sensing device 97 has a swivel arm 971 which is pivotably mounted about an axis 972 and has at one end a sensing roller 970 which scans the axis 510 of the roller 51.
  • an armature 973 is connected to the swivel arm 971, which plunges into the interior of a coil 974.
  • the coil 974 is connected to the control device 93, which is also in control connection with the electromagnets 575 and 914, the motor 500 for the roller 50 and the drive motor 953.
  • the sliver feeder 5 is again approached to the suction pipe 95 and the beginning of the sliver 43 is inserted into the suction pipe 95, the funnel 952 facilitating such insertion. If desired, it can be provided that after the introduction of the belt start 43 into the funnel 952 of the suction tube 95, the roller 50 is driven and the sliver 4 is conveyed deeper into the suction tube 95.
  • the motor 500 of the roller 50 is then stopped. Then the two electromagnets 575 and 914 are actuated, which now clamp the sliver 4.
  • the tape feeder 5 is then removed from the clamp 91 or the relative distance between the two clamps 91 and 92 is increased in some other suitable way. Since the minimum distance c between the two clamps 92 and 91 corresponds at least to the average length of the fibers contained in the sliver 4, the sliver 4 can be separated in a simple manner by pulling apart. Due to the interlocking profiles of the clamping parts 920 and 922 of the clamp 92, the sliver 4 is held back gently by the sliver feeder 5.
  • the roller 51 When the sliver 4 is inserted into the suction tube 95, the roller 51 changes its relative distance from the roller 50 in accordance with the thickness of the sliver. These movements of the roller 51 are transmitted to the armature 9-73 via the feeler roller 970, so that a corresponding current is induced in the coil 974 in accordance with these fluctuations in the thickness of the sliver 4, which current is passed on to the control device 93. This causes the roller 50 to be driven long after the tape feeder 5 has reached its working position in relation to the suction tube 95 until the sliver 4 has reached its full strength and no significant fluctuations in the sliver thickness can be registered in the control device 93 by the feeler roller 970 via the armature 973 and the spool 974.
  • the sliver feeder 5 is again brought into its position shown in FIG. 5 in accordance with the exemplary embodiment shown in FIG. 5. in which the rollers 50, 51 have reached their next position in relation to the suction pipe 95.
  • the roller 50 is now driven for a predetermined number of revolutions, so that a defined length is introduced into the suction tube 95.
  • the suction tube 95 is now driven in the direction of arrow P 17 and rotates the front end of the tape 43 so that it receives a tip. The tape tip later facilitates insertion into the feed device 2.
  • the feeler device described also makes it possible to convey the sliver 4 to such an extent that during the subsequent separation process a section of tape that does not correspond to the desired thickness is removed. This can be achieved regardless of where and how the feeler device is designed, for example with capacitive scanning of the sliver 4 and / or if a suitable feeler device is arranged independently of the belt feeder 5.
  • a helical groove 957 is provided for this purpose in the suction pipe 95, into which compressed air nozzles 958 with an axial and a tangential component open at one or more points.
  • the suction pipe 95 is connected via a valve 930 and a vacuum line 959 to a vacuum source, not shown.
  • the beginning of the band is brought into a molding press (not shown).
  • a molding press (not shown).
  • inward-directed nozzles can then also be provided in this molding press, through which nozzles an icing agent or other hardening agent can be applied.
  • FIG. 9 Another embodiment of a tape end preparation device 9 is shown in FIG. 9.
  • the tape end preparation device 9 is completely mechanical.
  • the belt start preparation device 9 has, in addition to the rollers 50, 51 of the belt feeder 5, a further pair of rollers, the rollers 924 and 925 of which can both be driven in opposite directions by their own drive (not shown) (see arrows P 22 and P 23 ). Due to the limited arrangement of the two rollers 924 and 925, not only a tensile force is exerted on the sliver 4, which is exerted together with that exerted by the sliver feeder 5 Clamping force causes the sliver 4 to pull apart.
  • the band piece 407 separated in this way is additionally conveyed by the rollers 924 and 925 and placed on a conveyor belt 408, which now transports the band piece 407 to a collection point (not shown).
  • the device for applying a sliver can be modified in many ways.
  • individual features can be replaced by equivalents and combined with one another in any way.
  • the sliver 4 is brought into a receiving position in the vicinity of the feed device 2 to be operated.
  • the beginning of the band 43 can also be tapered by tearing off a section of band and brought into an optimal shape for application by manual sharpening.
  • FIG. 7 shows a schematic representation of the essential elements for implementing the invention.
  • the elements of the tape start preparation device 9, its clamps 91 and 92, and its control device 93, which have already been described above, and which are required for taking up and putting on the sliver 4, are located in this exemplary embodiment on a maintenance device 98 which runs along the open-end spinning machine 16 and its multitude of open-end spinning devices 1 can be moved.
  • This can be a maintenance facility, which either carries out the tape application or which takes on additional tasks, such as. B. spool change, piecing, etc. If necessary, several different maintenance devices can be provided on the machine for one or more of the different special tasks.
  • FIG. 7 also shows a drive device 58 for the belt feeder 5, this drive device being able to produce a wide variety of movements as required.
  • FIG. 7 In front of the open-end spinning device 1, of which only the feeding device 2 is shown in FIG. 7, in this exemplary embodiment there is not only a single feed hopper 106, as shown for example in FIG. 1, but a rail 17, in which per spinning station two feed hoppers 170 and 171 are provided, which can be brought alternately into their work place directly in front of the feed device 2.
  • these feed hoppers 170 and 171 have a toothed contour which has the purpose of preventing the sliver 4 from sliding back, or at least making it difficult.
  • the pulling of the sliver 4 in the direction of the feed device 2 is not impaired by this configuration of the feed funnels 170 and 171.
  • the two photodiodes 173 and 174 are in control connection with the control device 18 of the open-end spinning machine 16.
  • Two control devices 177 and 178 are also in control connection with the control device 18, of which the drive device 177 of the rail 17 can give a longitudinal movement and the drive device 178 of the rail 17 can give a transverse movement.
  • the open-end spinning device 1 is fed by the feed device 2 with a sliver 4 which is removed from a can 40.
  • the sliver 4 is fed through the feed hopper 170 to the feed device 2.
  • the light barrier 175 thus detects the presence of a sliver 4.
  • the light barrier 176 detects the absence of a sliver 4 and sends a corresponding false signal to the control device 18.
  • the control device 18 issues a corresponding command to the control device 93 of the maintenance device 98.
  • the maintenance device 98 either called to this open-end spinning device 1, where a sliver 4 has run out, or stops the next time it passes this open-end spinning device 1.
  • a sliver 4 previously provided in the sliver holder 32 is then taken up in the manner described above by the sliver feeder 5 and brought into the desired state in the sliver start preparation device 9. This has been indicated by the dashed line 59.
  • the tape feeder 5 is brought in front of the feed hopper 171, which has been indicated by the line 590.
  • the motor 500 is switched on for several revolutions, so that the rollers 50 and 51 insert the sliver 4 into the feed hopper 171 sufficiently far.
  • the pair of rollers consisting of the rollers 50 and 51 is opened and the sliver 4 introduced into the feed hopper 171 is released by the sliver feeder 5.
  • the sliver is pulled through the tape holder 32.
  • the rail 17 then returns to its starting position by means of a transverse movement with the aid of the drive device 178.
  • a new sliver 4 can be introduced into the now empty feed hopper 170, so that when the sliver 4 fed through the feed hopper 171 to the feed device 2 runs out, a new sliver 4 is fed into the feed device 2 by lateral backset and subsequent transverse offset of the rail 17 is introduced.
  • the absence of a sliver 4 can be signaled by means not shown, and depending on this signal, the provision of a new sliver can be triggered.
  • the two feed hoppers 170 and 171 arranged in the rail 17 fulfill the functions of belt holders. Such a task can also be assigned to the feed hopper 106.
  • Such a tape holder - or such a pair of tape holders - upstream of the feed device 2 enables the tape to be put on in two Stages.
  • These belt holders can either be delivered to the feed device 2 or brought into a standby position.
  • the tape holders are designed as clamps, they are advantageously opened depending on the feed movement or the presence of the tape feeder 5 and closed depending on the return movement or the absence of the tape feeder in order to be able to pick up and hold back the new sliver 4.
  • the sliver 4 is thus in two stages on the, e.g. an open-end spinning machine 16. In the first stage, the sliver 4 is brought into a waiting position, from which the sliver 4 in the second stage at the desired time for introducing the sliver 4 is laterally and laterally offset in front of the running feed device 2 and is introduced into it.
  • this offset occurs as a function of the sliver 4 running out.
  • the monitoring device which monitors the fiber sliver 4 fed to the feed device 2
  • the monitoring device is provided at a location which is sufficiently far in front of the feed device 2, for example by fastening the light barriers 175 and 176 to the rail 17 with the aid of longer holders 162 and 163, the beginning of the sliver 43 of the new sliver 4 can be brought into the feed position at an early stage by displacing the rail 17 in such a way that it reaches the feeding device 2 overlapping with the end of the sliver 4 running out.
  • the work process is therefore not interrupted and does not need to be restarted.
  • the insertion process is repeated. Since the failure can be attributed to inadequate preparation of the beginning of the band 43, all processes from the preparation of the beginning of the band 43 are repeated. The same procedure is followed in the event of failure of the direct tape application. In both cases, after a presettable number of failed attempts, these are terminated and a signal is generated, as has already been described above in connection with the direct tape application in a feed device 2, possibly also without the interposition of a feed hopper 106.
  • the greatest possible security during tape application is achieved if the sliver 4 to be fed to a feed device 2, which is in a defined receiving position, is picked up and clamped. The sliver 4 is then cut to a predetermined length. The sliver 4 is then given a defined shape in that the beginning of the sliver 43 is sharpened and optionally solidified in this shape. The sliver 4 prepared in this way is now brought in front of the feed device 2 and introduced into it. Now it is a matter of checking the success of the introduction, for which purpose the sliver 4 is monitored to determine whether it is being transported.
  • Can 40 and 41 located in the working position each be provided a sensor which scans the inside of this can and which triggers the introduction of a sliver 4 which is in the ready position into the feed device 2 when the sliver 4 runs out.
  • This sensor can be attached to the guide rod 300 of the tape feeder 3, but it is possible to attach the sensor to the tape feeder 5. It is also possible to mount the sensor movably on the guide rod 300 of the belt feeder 3 or on another suitable holder, so that it can be brought manually or automatically into different positions of the scanning of a can 40 or 41. It is also possible to provide the sensor so that it can oscillate, so that it can be assigned to several cans 40, 41 at the same time.
  • the first determined sliver length can, for example, be dimensioned such that the measured sliver 4 runs out within the next four hours. So there is still enough time to provide a filled jug and, if not previously done, to check the beginning of the tape in a defined receiving position.
  • the parts and units that are required for receiving the sliver 4 in a receiving position and for a template before and for its introduction into a feed device 2 may vary depending on the type and design of, e.g. with a card, also on the card; but they can also on a transport device, e.g. the trolley with which the cans 40 are delivered can be arranged.
  • the sliver 4 If the sliver 4 is brought to a work station, for example in front of the feeding device 2 of an open-end spinning device 1, and is not yet in the receiving position, it must be brought into this. This can be done, for example, by a device for threading the beginning of the tape into the tape feeder 3, for example into the tape holder 32 designed as a tape guide Figure 2, happen.
  • the device for threading the fiber sliver can essentially have the shape of one of the belt feeders 5 described. In the band holder 32, this threading device must be able to perform a movement according to arrow P 1 (FIG. 2). Because of the threading security, training as a controllable clamp (according to belt feeder 5) is particularly advantageous.
  • the sliver 4 can also be unthreaded from the sliver 3 by the sliver receiver or the sliver feeder.
  • FIG. 10 shows a device 35 for unthreading the sliver 4 from a sliver 3 of the type shown in FIG.
  • the device for threading out the sliver 4 essentially consists of a fork-shaped belt gripper 350, which is arranged at a radial distance at the end of a rotatable rod 351.
  • the sliver 4 is to be threaded out of the belt holder 31.
  • the device 35 for threading out the sliver 4 is brought into the position shown above the sliver 4.
  • the belt gripper 350 has on its open side an expanding insertion opening 352 which is designed such that it forms a sliver guide which brings the sliver 4 to a defined sliver travel and that the sliver gripper 350, when in the direction of arrow P 24 , ie transversely to the sliver 4, is lowered onto this, this is detected with certainty.
  • a separate guide can also be provided, which is located at another suitable location, e.g. B. is attached to the sliver 3 and the sliver 4 between the can 40 and tape holder 31 on a defined path.
  • the belt gripper 350 After the belt gripper 350 has taken up the fiber sliver 4, he rotated by rotation about the axis of the rod 351 in the direction of arrow P 25 and takes the sliver 4 with him.
  • the arrangement of the belt gripper 350 to the rod 351 is such that when the rod 351 rotates in the direction of the arrow P 25 , when the rod 351 is essentially on the imaginary central axis h of the band holder 3, the sliver 4 is rotated by the rotating belt gripper 350 is lifted out of the tape holder 32 and finally released completely by the tape gripper 350.
  • the guidance can also be dispensed with if the tape feeder is designed appropriately if it is ensured in another way that the fiber tape 4 can be removed.
  • the tape feeder can perform a corresponding tape search movement and work with negative pressure, the picking up of the sliver 4 being able to be signaled due to a change in negative pressure, so that the further operations of the threading process can then be carried out.
  • tape unthreading may only be carried out after the tape has been attached. If the tape unthreading is not to be triggered manually, the device 35 for tape unthreading is coupled to a switching device (not shown), which in the simplest case is designed as a timing relay or the like and triggers the tape unthreading. However, it can also be coupled to the return movement of the belt feeder 5, since the belt application has ended during this return movement.
  • a switching device not shown
  • this switching device is expediently connected directly or indirectly to the sliver monitoring device in front of the feed device 2 (for example the light barrier 175 or 176).
  • the switching device can also be connected to the belt monitoring device of the rollers 50, 51.
  • the device for unthreading the sliver 4 from the sliver guide can be designed differently. If, for example, the band guide is designed in the form of a closed ring, from which a part of the circumference can be moved away for inserting or removing the sliver 4, the threading device is naturally designed and movable accordingly in order to achieve this opening and closing movement of the ring part and the to allow radial extension movement of the sliver 4.
  • the belt can also be applied in a direction parallel to the longitudinal axis of the machine or tangential to a round textile machine, in which case it is then of course necessary to adapt the movement of the belt feeder 5 to this.
  • any feed hoppers 170 and 171 and their movements it was assumed that the supply of the sliver 4 into the feed device 2 perpendicular to the longitudinal extent of the machine or - e.g. in circular knitting machines or other round, sliver 4 working or processing machines - done radially to the machine.
  • the belt can also be applied in a direction parallel to the longitudinal axis of the machine or tangential to a round textile machine, in which case it is then of course necessary to adapt the movement of the belt feeder 5 to this.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)

Abstract

Pour la pose automatique d'un ruban de fibres (4) sur une machine textile présentant un dispositif d'alimentation (2), la fin d'un ruban de fibres (4) est placée dans une position de réception déterminée. Dans cette position de réception, la fin du ruban est reçue en tant que début de ruban et transmise au dispositif d'alimentation (2). Pour la mise en ÷uvre de ce procédé, il est prévu un dispositif de présentation du ruban (3) dans lequel le ruban de fibres (4) est maintenu dans cette position de réception déterminée. Il est prévu également, pour recevoir le ruban de fibres (4) présenté dans cette position de réception et pour l'introduire dans le dispositif d'alimentation (2), un dispositif d'amenée du ruban (5). La machine textile peut être conçue comme une machine textile quelconque travaillant ou transformant un ruban de fibres (4), par exemple comme un démêloir, un métier à filer, une machine à tricoter ou similaire.

Claims (28)

  1. Procédé pour la pose automatique d'un ruban de fibres sur une machine textile ou dispositif textile comportant un dispositif d'alimentation où le ruban de fibres est transmis au dispositif d'alimentation, caractérisé en ce qu'avant sa transmission au dispositif d'alimentation, le début du ruban à transmettre est tourné autour de son propre axe pour l'appointer.
  2. Procédé selon la revendication 1, caractérisé en ce que le début du ruban à transmettre est exposé à un courant d'air.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le début du ruban à transmettre est consolidé en ce qui concerne sa forme.
  4. Procédé selon la revendication 3, caractérisé en ce que la consolidation du début du ruban est effectué en appliquant un milieu se volatilisant sans résidus après un temps prédéterminé.
  5. Procédé selon une ou plusieurs des revendications 1 à 4, caractérisé en ce que le ruban de fibres à acheminer vers le dispositif d'alimentation est repris dans une position définie et puis tourné autour de son axe pour l'appointer; en ce que le ruban de fibres ainsi préparé est acheminé jusque devant le dispositif d'alimentation et est introduit dans celui-ci, après quoi une longueur de ruban définie est introduite dans le dispositif d'alimentation, la réussite de l'introduction étant contrôlée pour assurer que le procédé d'introduction est répété au cas où l'introduction du début du ruban était ratée.
  6. Dispositif pour la pose automatique d'un ruban de fibres sur une machine textile ou dispositif textile comportant un dispositif d'alimentation, comprenant un dispositif d'amenée de ruban servant à l'introduction du ruban de fibres dans le dispositif d'alimentation ainsi qu'une installation préparatrice du début du ruban qui présente deux parties mobiles se déplaçant l'un par rapport à l'autre, dont l'une est formée par le dispositif d'amenée de ruban tandis que l'autre coopère avec le dispositif d'amenée de ruban, pour la mise en oeuvre du procédé selon la revendication 1, caractérisé en ce que l'installation préparatrice (9) du début du ruban est conçue comme installation rotative tournant le début du ruban à transmettre autour de son propre axe en l'appointant.
  7. Dispositif selon la revendication 6, caractérisé en ce que le dispositif d'amenée 5) de ruban présente une pince mobile (50, 51; 92) susceptible d'être commandée, positionnée transversalement par rapport au ruban (4) de fibres se trouvant en position de reprise.
  8. Dispositif selon la revendication 7, caractérisé en ce que la pince (50, 51) du dispositif d'amenée de ruban est conçue comme paire de cylindres à l'aide de laquelle le début du ruban (43) peut être amené au dispositif d'alimentation (2) et dont les cylindres (50, 51) peuvent être écartés radialement l'un de l'autre.
  9. Dispositif selon une ou plusieurs des revendications 6 à 8, caractérisé en ce que la partie de l'installation préparatrice (9) du début du ruban coopérant avec le dispositif d'amenée (5) de ruban est fixe.
  10. Dispositif selon une ou plusieurs des revendications 6 à 9, caractérisé en ce que l'installation préparatrice (9) du début du ruban présente un entonnoir d'entrée (952) susceptible d'être commandé de façon rotative.
  11. Dispositif selon une ou plusieurs des revendications 6 à 10, caractérisé en ce que l'installation préparatrice (9) du début du ruban présente une tuyère (95) d'aspiration susceptible d'être commandée et dans laquelle débouche au moins une buse (958) d'air comprimé présentant une composante axiale et une composante tangentielle.
  12. Dispositif selon la revendication 11, caractérisé en ce que la tuyère (95) d'aspiration présente un contour intérieur hélicoïdal.
  13. Dispositif selon une ou plusieurs des revendications 6 à 12, caractérisé en ce que l'installation préparatrice (9) du début du ruban présente un dispositif (91, 92; 5, 91) pour séparer le ruban.
  14. Dispositif selon la revendication 13, caractérisé en ce que le dispositif de séparation du ruban présente une pince (91) susceptible d'être commandée et coopérant avec le dispositif d'amenée (5) de ruban et qui est relié avec l'entraînement des cylindres (50, 51) du dispositif d'amenée (5) du ruban, en ce qui concerne la commande.
  15. Dispositif selon la revendication 14, caractérisé en ce que la pince coopérant avec le dispositif d'amenée (5) du ruban est conçue comme une paire de cylindres (924, 925) qui sont entraînés en directions opposées et qui sont disposés, l'un par rapport à l'autre, de façon croisée.
  16. Dispositif selon une ou plusieurs des revendications 13 à 15, caractérisé en ce que la paire de cylindres du dispositif d'amenée (5) du ruban est une partie constituante du dispositif de séparation (50, 51, 91) du ruban.
  17. Dispositif selon une ou plusieurs des revendications 13 à 16, caractérisé en ce qu'une commande pour la modification de la distance relative est attribuée au dispositif d'amenée (5) du ruban et à la pince (91) coopérant avec le dispositif d'amenée du ruban.
  18. Dispositif selon la revendication 17, caractérisé en ce que - vu en direction vers le début (43) du ruban - le dispositif de séparation du ruban présente une pince (92) supplémentaire susceptible d'être commandée et montée en amont de la paire de cylindres (50, 51).
  19. Dispositif selon la revendication 18, caractérisé en ce que la pince (92) supplémentaire montée en amont de la paire de cylindres (50, 51) comprend deux éléments de serrage (920, 922) dont les profils (921, 923) s'emboîtent.
  20. Dispositif selon la revendication 19, caractérisé en ce que les profils (921, 923) qui s'emboîtent sont arrondis.
  21. Dispositif selon la revendication 20, caractérisé en ce que l'un des profils (921, 923) qui s'emboîtent présente une section concave et que l'autre des profils (921, 923) qui s'emboîtent présente une section convexe.
  22. Dispositif selon une ou plusieurs des revendications 18 à 21, caractérisé en ce que les deux pinces (91, 92; 91, 50, 51) susceptibles d'être commandées du dispositif de séparation du ruban peuvent êre commandées de façon synchrone.
  23. Dispositif selon une ou plusieurs des revendications 18 à 22, caractérisé en ce que la distance minimum des deux pinces (91, 92; 91, 50, 51) du dispositif de séparation du ruban est déterminée par la longueur de coupe des fibres du ruban (4) de fibres.
  24. Dispositif selon une ou plusieurs des revendications 18 à 23, caractérisé en ce que la distance entre les deux pinces (91, 92; 91, 50, 51) du dispositif de séparation du ruban peut être augmentée essentiellement jusqu'à une valeur correspondant au double de la longueur de coupe.
  25. Dispositif selon une ou plusieurs des revendications 18 à 24, caractérisé en ce qu'au moins une des pinces (91, 92; 91, 50, 51) est logée de façon orientable pour pouvoir augmenter la distance minimum.
  26. Dispositif selon une ou plusieurs des revendications 6 à 25, caractérisé en ce que l'installation préparatrice (9) du début du ruban comporte une installation de fixage (965) du bout du ruban susceptible d'être amenée à agir sur le bout du ruban.
  27. Dispositif selon la revendication 26, caractérisé en ce que l'installation de fixage (965) du bout du ruban est conçue comme installation de pulvérisation.
  28. Dispositif selon la revendication 27, caractérisé en ce que l'installation de pulvérisation (965) est conçue comme installation de givrage.
EP91909136A 1990-05-18 1991-05-17 Procede et dispositif pour la pose automatique d'un ruban de fibres sur une machine textile Expired - Lifetime EP0528884B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP95106898A EP0668380B1 (fr) 1990-05-18 1991-05-17 Procédé et dispositif pour la pose automatique d'un ruban de fibres sur une machine textile
EP95120117A EP0709501B1 (fr) 1990-05-18 1991-05-17 Procédé pour remplacer des pots entre un chariot de transport pour pots plats et un métier à filer à bout libre et chariot de transport pour la mise en oeuvre de ce procédé
EP96119796A EP0770717B1 (fr) 1990-05-18 1991-05-17 Méthode et dispositif pour prélever et alimenter pneumatiquement un ruban sur une machine à filer du type open-end

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4015938 1990-05-18
DE19904015938 DE4015938A1 (de) 1990-05-18 1990-05-18 Spinnereianlage
DE19904035439 DE4035439A1 (de) 1990-11-08 1990-11-08 Verfahren und vorrichtung zum automatischen anlegen eines faserbandes an einer textilmaschine
DE4035439 1990-11-08
PCT/DE1991/000409 WO1991018134A1 (fr) 1990-05-18 1991-05-17 Procede et dispositif pour la pose automatique d'un ruban de fibres sur une machine textile

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP95106898A Division-Into EP0668380B1 (fr) 1990-05-18 1991-05-17 Procédé et dispositif pour la pose automatique d'un ruban de fibres sur une machine textile
EP95120117A Division-Into EP0709501B1 (fr) 1990-05-18 1991-05-17 Procédé pour remplacer des pots entre un chariot de transport pour pots plats et un métier à filer à bout libre et chariot de transport pour la mise en oeuvre de ce procédé

Publications (2)

Publication Number Publication Date
EP0528884A1 EP0528884A1 (fr) 1993-03-03
EP0528884B1 true EP0528884B1 (fr) 1996-07-24

Family

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Family Applications (5)

Application Number Title Priority Date Filing Date
EP95106898A Expired - Lifetime EP0668380B1 (fr) 1990-05-18 1991-05-17 Procédé et dispositif pour la pose automatique d'un ruban de fibres sur une machine textile
EP95120117A Expired - Lifetime EP0709501B1 (fr) 1990-05-18 1991-05-17 Procédé pour remplacer des pots entre un chariot de transport pour pots plats et un métier à filer à bout libre et chariot de transport pour la mise en oeuvre de ce procédé
EP96119796A Expired - Lifetime EP0770717B1 (fr) 1990-05-18 1991-05-17 Méthode et dispositif pour prélever et alimenter pneumatiquement un ruban sur une machine à filer du type open-end
EP91909136A Expired - Lifetime EP0528884B1 (fr) 1990-05-18 1991-05-17 Procede et dispositif pour la pose automatique d'un ruban de fibres sur une machine textile
EP91909388A Expired - Lifetime EP0528907B2 (fr) 1990-05-18 1991-05-17 Procede et dispositif pour le transport de cannettes plates entre des machines ou des dipositifs servant a travailler ou a traiter des bandes de fibres

Family Applications Before (3)

Application Number Title Priority Date Filing Date
EP95106898A Expired - Lifetime EP0668380B1 (fr) 1990-05-18 1991-05-17 Procédé et dispositif pour la pose automatique d'un ruban de fibres sur une machine textile
EP95120117A Expired - Lifetime EP0709501B1 (fr) 1990-05-18 1991-05-17 Procédé pour remplacer des pots entre un chariot de transport pour pots plats et un métier à filer à bout libre et chariot de transport pour la mise en oeuvre de ce procédé
EP96119796A Expired - Lifetime EP0770717B1 (fr) 1990-05-18 1991-05-17 Méthode et dispositif pour prélever et alimenter pneumatiquement un ruban sur une machine à filer du type open-end

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP91909388A Expired - Lifetime EP0528907B2 (fr) 1990-05-18 1991-05-17 Procede et dispositif pour le transport de cannettes plates entre des machines ou des dipositifs servant a travailler ou a traiter des bandes de fibres

Country Status (8)

Country Link
US (1) US5276947A (fr)
EP (5) EP0668380B1 (fr)
JP (2) JP3521085B2 (fr)
BR (1) BR9105752A (fr)
CS (1) CS146291A3 (fr)
CZ (1) CZ146091A3 (fr)
DE (5) DE59109242D1 (fr)
WO (2) WO1991018134A1 (fr)

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Also Published As

Publication number Publication date
EP0528907B1 (fr) 1999-03-17
EP0709501A2 (fr) 1996-05-01
EP0668380A2 (fr) 1995-08-23
JPH05508688A (ja) 1993-12-02
WO1991018135A1 (fr) 1991-11-28
EP0770717A3 (fr) 1997-08-13
DE59109111D1 (de) 1999-04-22
US5276947A (en) 1994-01-11
EP0528907B2 (fr) 2002-08-14
EP0770717A2 (fr) 1997-05-02
EP0528907A1 (fr) 1993-03-03
DE59108036D1 (de) 1996-08-29
EP0528884A1 (fr) 1993-03-03
JP3521085B2 (ja) 2004-04-19
EP0709501B1 (fr) 2002-10-02
EP0668380B1 (fr) 1998-04-01
EP0770717B1 (fr) 2003-03-19
CS146291A3 (en) 1992-02-19
EP0709501A3 (fr) 1996-07-31
DE59109248D1 (de) 2003-04-24
DE59108961D1 (de) 1998-05-07
CZ146091A3 (en) 1993-12-15
EP0668380A3 (fr) 1995-11-02
BR9105752A (pt) 1992-05-19
DE59109242D1 (de) 2002-11-07
WO1991018134A1 (fr) 1991-11-28
JPH05501739A (ja) 1993-04-02

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