EP4101954B1 - Boîte à filer pour un dispositif de filature à rotor à bouts ouverts - Google Patents

Boîte à filer pour un dispositif de filature à rotor à bouts ouverts

Info

Publication number
EP4101954B1
EP4101954B1 EP22176977.1A EP22176977A EP4101954B1 EP 4101954 B1 EP4101954 B1 EP 4101954B1 EP 22176977 A EP22176977 A EP 22176977A EP 4101954 B1 EP4101954 B1 EP 4101954B1
Authority
EP
European Patent Office
Prior art keywords
thread
spinning
yarn
spin box
insertion recess
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.)
Active
Application number
EP22176977.1A
Other languages
German (de)
English (en)
Other versions
EP4101954A1 (fr
Inventor
Andreas Jakobinski
Sebastian Thomas
Olaf Redlich
Sandra Toribio Garcia
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.)
Saurer Jiangsu Textile Machinery Co Ltd
Original Assignee
Saurer Jiangsu Textile Machinery Co Ltd
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
Application filed by Saurer Jiangsu Textile Machinery Co Ltd filed Critical Saurer Jiangsu Textile Machinery Co Ltd
Publication of EP4101954A1 publication Critical patent/EP4101954A1/fr
Application granted granted Critical
Publication of EP4101954B1 publication Critical patent/EP4101954B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/16—Framework; Casings; Coverings ; Removal of heat; Means for generating overpressure of air against infiltration of dust; Ducts for electric cables
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/48—Piecing arrangements; Control therefor
    • D01H4/50—Piecing arrangements; Control therefor for rotor spinning

Definitions

  • the present invention relates to a spinning box for an open-end rotor spinning device, in particular for a semi-automatic rotor spinning device, according to the preamble features of claim 1.
  • spinning box is shown, for example, in the document EP 3 153 612 A1 known.
  • Another spinning box is from the document EP 2 963 164 A1
  • Spinning boxes are known in the usual way to protect the components required for the production of a spun thread from the environment.
  • known spinning boxes house a disentangling unit by which a supplied fiber bundle is separated into individual fibers and parallelized. The separated fibers are guided via a fiber guide channel leading from the disentangling unit to a spinning rotor located in the spinning box, onto the fiber slide wall of the rotor.
  • the rotation of the spinning rotor causes the individually supplied fibers to slide from the fiber slide wall into a radial fiber groove of the spinning rotor, where the separated fibers attach to an open end of a spun thread laid in the fiber groove.
  • the spun thread is drawn off from the spinning box via a thread take-up channel communicating with the spinning rotor cup, thereby continuously forming the spun thread into a drawable strand as it adheres.
  • a restart process is required to resume spinning. This involves feeding a yarn end from the take-up bobbin into the yarn take-up channel and onto the spinning rotor.
  • the yarn end must be separated and prepared by unraveling or twisting it so that the individual fibers can attach more reliably to the open yarn end.
  • This preparation is typically carried out using a service unit or within the spinning box using the spinning rotor, as described, for example, in the document [document name missing in original text].
  • EP 3 276 057 A1 The first option is advantageous for automatic open-end spinning machines, but unsuitable for semi-automatic open-end spinning machines that lack a service unit. The latter solution is suitable for these machines. However, this requires the spinning rotor to be driven in a defined manner, which can shorten the service life of the spinning rotor drive for pure yarn production.
  • the present invention is intended to provide an alternative method for preparing a spun thread end for a spinning process, in particular protected from the ambient air, and furthermore particularly suitable for semi-automatic open-end spinning machines.
  • a spinning box featuring a fiber tape inlet for feeding a fiber tape to a disassembly unit, which can be arranged in a disassembly unit receptacle within the spinning box, and a yarn exit opening through which a spun yarn produced from the fed fiber tape can be discharged from the spinning box.
  • the spinning box incorporates a yarn end preparation unit for preparing the yarn end, with the yarn end preparation unit positioned opposite the yarn exit opening for the mutual transfer of a spun yarn. This allows for yarn end preparation within the spinning box, protected from the ambient air, and in particular, independent of a service unit and without compromising the service life of a spinning rotor drive.
  • Such a spinning box is especially suitable for semi-automatic open-end spinning machines, but can also be used with fully automatic open-end spinning machines.
  • the spinning box has a yarn insertion recess that communicates with the yarn exit opening and can be functionally connected to the yarn end preparation unit.
  • a spinning yarn can be transferred from the yarn exit opening into this recess, which extends in a defined direction away from the yarn exit opening.
  • the yarn insertion recess thus increases the design freedom of the spinning box.
  • the yarn end preparation unit can be arranged within the spinning box at a selected location as required, taking into account the available space.
  • the spinning box comprises a first housing side and a second housing side which adjoins the first housing side at an angle of less than 180°, wherein the yarn exit opening is formed in the first housing side and wherein the yarn insertion recess extends from the yarn exit opening into the second housing side and is, in particular, at least partially slot-shaped.
  • the spinning box has a third housing side which adjoins the second housing side at an angle of less than 180°, wherein the thread insertion recess extends from the thread exit opening into the third housing side and is, in particular, at least partially slotted.
  • This allows for a more reliable, contactless transfer of the spinning thread into the thread insertion recess for a spinning thread preparation process using the thread end preparation unit.
  • the first, second, and, in particular, third sides of the housing are formed by an attachment that can be detachably fastened to the spinning box.
  • This attachment can be achieved using conventional clamping, snap-fit, screw connections, or similar positive-locking and/or force-locking connection types that allow for non-destructive, repeatable removal of the attachment.
  • Such an attachment facilitates the reliable transfer of the spinning yarn from the yarn exit opening to the yarn insertion recess and provides access to the yarn end preparation unit, for example, to troubleshoot malfunctions or replace worn parts.
  • the attachment in the direction of the spinning thread forms at least one final component of the spinning box or, more preferably, the final component of the spinning box, which further preferably forms a component that is raised or protrudes from the other housing sides of the spinning box.
  • the housing sides of the attachment mounted on the spinning box are flush with the outer surface surfaces of the spinning box adjacent to these housing sides.
  • a front surface surface of the spinning box adjacent to the fiber tape inlet is formed at least largely or completely from at least one housing side of the attachment.
  • the yarn end preparation unit includes a yarn cutting unit, for example a yarn cutting unit, which is arranged in the spinning box opposite the yarn insertion recess for cutting a yarn received in the yarn insertion recess.
  • the yarn cutting unit can therefore be located away from the yarn end preparation unit. of the normal yarn path, which reliably prevents disruption of the spinning process in the event of a possible defect in the yarn cutting unit.
  • a yarn guide ramp is arranged within the spinning box, which is positioned relative to the yarn insertion recess in such a way that a spinning thread inserted into the insertion recess can be guided in a defined manner via the yarn guide ramp. This reduces, or ideally eliminates, the risk of the spinning thread becoming entangled during insertion into the insertion recess.
  • the yarn guide ramp is particularly preferably arranged between the yarn take-off channel outlet and the yarn cutting unit, with the yarn guide ramp projecting beyond the yarn take-off channel outlet along the take-off direction of the yarn, more preferably with a ramp surface extending transversely to and away from the yarn take-off channel outlet, in order to reliably guide the yarn into or to a yarn cutting point of the cutting unit during insertion.
  • the yarn cutting unit can be designed, in particular by the yarn cutting unit, to include two blade elements that are movable relative to each other, wherein the blade elements form a cutting opening for cutting the yarn.
  • the yarn guide ramp is more preferably designed and arranged corresponding to a cutting edge of one of the blade elements, whereby the yarn is reliably guided into the cutting opening, preferably to the cutting base of the cutting opening, during insertion to enable reliable cutting of the yarn.
  • a thread sensor is arranged in the spinning box, associated with the thread insertion recess, to detect a spinning thread inserted into the thread insertion recess. More preferably, the thread cutting unit can be controlled by the thread sensor or an intermediate control unit, based on a detection signal from the thread sensor, to cut the spinning thread inserted into the thread insertion recess. This allows for automated initialization of the spinning thread cutting.
  • the spinning box has a cleaning housing which includes a discharge channel extending along the dissolving unit receptacle with an inlet opening which leads to an outer surface surrounding the spinning box.
  • the cleaning housing is open, with an outlet opening that can be coupled to a dirt channel of the spinning machine, and with a receiving opening arranged between the inlet and outlet openings, which is designed to accommodate the dissolving unit and to remove dirt particles from the dissolving unit housing.
  • the cleaning housing also has a feed opening leading into the discharge channel, away from the receiving opening, for conveying dirt particles and fiber residues. The feed opening allows the cleaning housing, in particular the discharge channel, to be used to remove dirt particles from areas of the spinning box other than the dissolving unit housing.
  • the cleaning housing is typically, as shown in the document... EP 2 963 164 A1
  • the discharge channel is pressurized with negative pressure, whereby the inlet opening, which communicates with the ambient air, ensures that there is no continuous increase in negative pressure within the disentanglement unit. With negative pressure applied, this results in a continuous airflow in the discharge channel, which is directed from the inlet opening towards the outlet opening. This allows dirt particles and fiber remnants to be carried away from the disentanglement unit via the intermediate receiving opening.
  • the yarn end preparation unit includes a yarn end unwinding unit for unwinding a yarn end inserted into the yarn exit opening.
  • This unwinding unit is formed by a yarn discharge channel, which can be operatively connected to a spinning rotor and has a yarn discharge channel outlet located in the spinning box opposite the yarn exit opening.
  • the discharge opening is positioned upstream of the yarn end unwinding unit in the yarn discharge channel, in the direction of yarn pull-off.
  • the feed opening is arranged between the inlet opening and the receiving opening, particularly near the inlet opening, and more preferably directly downstream of the inlet opening. This allows for easier access to the feed opening, for example for cleaning purposes.
  • the feed opening is formed by an insert which is arranged in the discharge channel, and is particularly replaceable. This further simplifies the cleaning of the feed opening.
  • the feed opening can be adapted to different fiber materials that can be processed by the open-end spinning machine or in the spinning box.
  • the spinning box is a component of a spinning unit of an open-end spinning machine, in particular a semi-automatic rotor spinning machine.
  • the spinning unit comprises a spinning rotor, preferably individually driveable, whose rotor cup rotates at high speed in a vacuum-operated rotor housing during spinning.
  • the rotor housing can be closed by a cover element formed by the spinning box.
  • a dissolving unit in particular a dissolving roller, is arranged in the dissolving unit receptacle of the spinning box, to which a fiber bundle can be fed via the fiber tape inlet.
  • the dissolving roller is arranged and configured to break down the fiber bundle into individual fibers, whereby dirt particles and/or fiber residues released from the fiber bundle are discharged via the cleaning housing into a dirt channel of the spinning machine.
  • a fiber guide channel arranged in the spinning box is operatively connected to the dissolving roller, through which the dissolving fibers can be fed to the rotor cup.
  • Opposite the spinning rotor cup is a yarn extraction channel inlet, the yarn extraction channel extending from the yarn extraction channel inlet to a yarn extraction channel outlet opposite the yarn exit opening within the spinning box.
  • the spinning device enables the preparation of a spun thread end during a spinning process to be carried out completely within the spinning box, protected from the ambient air.
  • a method for spinning a yarn in an open-end spinning machine in particular a semi-automatic rotor spinning machine, wherein the open-end spinning machine has a spinning device as described above.
  • the open-end spinning machine has a spinning device as described above.
  • a yarn passing through the yarn exit opening is drawn from the yarn exit opening into the
  • the yarn is transferred to the yarn insertion recess.
  • This transfer can be performed manually by an operator or automatically, for example, by means of a yarn clamping unit, which is designed to be movable outside the spinning box relative to the yarn's path.
  • the yarn clamping unit can be assigned to a service unit operating the spinning device, to a spinning station encompassing the spinning device, or to the spinning device itself.
  • the yarn cutting unit is initialized to cut the inserted yarn.
  • This initialization can preferably be carried out by means of a yarn sensor monitoring the yarn insertion recess, as described above by way of example.
  • the initialization can be triggered by an operator action, such as triggering a yarn cutting signal by operating an actuator.
  • the initialization of the yarn cutting unit can be triggered directly by the actuator or via a control unit.
  • the cut yarn segment is preferably disposed of within the spinning box via the cleaning housing, as described above.
  • the cut end of the yarn is presented to the yarn exit opening for insertion into the spinning box, specifically into the yarn take-up channel.
  • a suction flow is present at the yarn take-up channel outlet, drawing the yarn end into the channel.
  • This suction flow can preferably be generated by the compressed air supply and/or by the negative pressure applied at the discharge opening.
  • the yarn end inserted into the yarn take-up channel is then prepared by the yarn end preparation unit.
  • the yarn end is preferably unwound or twisted in the yarn take-up channel, preferably with a predominant compressed air supply.
  • the unwound yarn end is fed to the spinning rotor, specifically the spinning rotor cup, for continuation of the spinning process.
  • Figure 1 and 2 Figure 1 shows a spinning box 1 according to an exemplary embodiment.
  • the spinning box 1 has a fiber tape inlet, which, in the illustrated embodiment, is preceded by a fiber tape feeder comprising a pre-compressor 10 and a driven feed roller 12 downstream in the fiber tape transport direction.
  • the fiber tape is pre-compressed and transported via the fiber tape inlet into the spinning box 1 to a dissolving roller (not shown), which serves as a dissolving unit.
  • the spinning box 1 has a yarn exit opening 4.
  • Adjoining the yarn exit opening 4 is a yarn insertion recess 8, into which the spun yarn 2 can be seamlessly transferred from the yarn exit opening 4.
  • the yarn insertion recess 8 extends in a slot-like manner from the yarn exit opening 4 in a direction leading away from it.
  • the yarn exit opening 4 and the yarn insertion recess 8 are formed in an attachment 6, which is detachably or non-destructively attached to the spinning box 1 via a snap-fit connection.
  • the attachment 6 forms a first housing side 6a and a second housing side 6b for the spinning box 1, wherein the yarn exit opening 4 is formed on the first housing side 6a and the yarn insertion recess 8 extends into the second housing side 6b.
  • the first housing side 6a and the second housing side 6b are adjacent to each other, forming an angle of less than 180°.
  • FIG 3 shows a further embodiment of the attachment 6, which differs from the one in Figure 1
  • the illustrated attachment 6 differs only by a third housing side 6c, in which the thread insertion recess 8 extends and which is formed adjacent to the second housing side 6b including an angle of less than 180°.
  • the spinning box 1 is designed to accommodate a yarn end preparation unit, which is configured for preparing the spinning yarn 2.
  • the yarn end preparation unit is arranged within the spinning box 1 opposite the yarn exit opening 4 and the yarn insertion recess 8.
  • the yarn preparation unit comprises a yarn cutting unit 20, which functions as a yarn cutting unit with a first blade element.
  • the yarn cutting unit 20 is formed by a first blade element 21 and a second blade element 22, which is relatively movable relative to the first blade element 21, for cutting the yarn 2.
  • the second blade element 22 is coupled to a retractable piston.
  • the yarn cutting unit 20 with its cutting opening formed by the first blade element 21 and second blade element 22, is arranged parallel to a yarn take-up channel 30 and adjacent to a yarn take-up channel outlet 32 of the yarn insertion recess 8, opposite the yarn insertion recess 8, with the yarn take-up channel outlet 32 being opposite the yarn exit opening 4.
  • the yarn end preparation unit further comprises a yarn end dissolution unit, which is positioned upstream of the yarn take-off channel outlet in the yarn take-off channel 30 in the direction of yarn 2 take-off.
  • the yarn end dissolution unit has a pneumatic connection 34 through which compressed air can be introduced into the yarn take-off channel 30 in a known manner, against the direction of take-off, to generate a vortex airflow in the yarn take-off channel 30 in order to dissolution a yarn end held in the yarn take-off channel 30 in the area of the yarn end preparation unit.
  • the spinning box 1 has a cleaning housing 40, which, in the usual manner, features a discharge channel 41 extending along the dissolving unit receptacle, with an inlet opening 42 open to an outer surface surrounding the spinning box 1, an outlet opening that can be connected to a dirt channel of the spinning machine, and a receiving opening arranged between the inlet opening 42 and the outlet opening, which is open to receive the dissolving unit for the purpose of removing dirt particles from the dissolving unit receptacle.
  • the cleaning housing 40 includes, apart from the receiving opening, a feed opening leading into the discharge channel 41 for introducing dirt particles.
  • the feed opening is formed in an insert 50, which is replaceably arranged in the base of an inlet area of the discharge channel 40 near the inlet opening 42.
  • the feed opening is coupled to a discharge opening by means of a connecting hose or channel, which is located upstream in the thread discharge channel 30 of the thread end disassembly unit in the discharge direction.
  • Figures 4 and 5 Figure 1 shows a schematic perspective view of a section of a spinning box 1 with an attachment 50 according to a further embodiment.
  • the spinning box 1 has a ramp-like upper surface, with the attachment 50 extending adjacent to the front surface of the spinning box 1, which is adjacent to the upper surface.
  • the extension 50 which includes the pre-compressor 10 and the feed roller 12 (not shown), is defined by the fiber spool feeder.
  • the extension 50 extends along the front of the spinning box 1, in the direction of take-off of the yarn 1, from the top to a position adjacent to the fiber spool feeder, and in a direction orthogonal to the take-off direction and leading away from the fiber spool feeder, largely across the front, and in this embodiment, across the entire front of the spinning box 1.
  • the attachment 50 is therefore larger in its dimensions than the one in Figures 1 to 3
  • the attachment 50 shown is designed so that the attachment 50 can be more reliably and releasably fixed to the spinning box 1, and after removing the attachment 50 from the spinning box 1, a larger access area into the spinning box 1 is also provided, which enables easier and more reliable operation of the components covered by the attachment 50, such as the thread cutting unit 20, inside the spinning box 1.
  • the attachment 50 is detachably fixed to the spinning box 1 by means of locking devices.
  • Suitable locking devices include, for example, complementary locking latches and locking recesses 16 on the spinning box 1 and the attachment 50.
  • the attachment 50 is inserted in a recess 14 of the spinning box 1, wherein at least the outer surface sides of the spinning box 1 are flush with the housing sides 6a, 6b, 6c of the attachment 50, i.e., at least on the outside, they merge seamlessly into one another.
  • a yarn guide ramp 60 is arranged between the yarn take-up channel 30 and the yarn cutting unit 20.
  • the ramp has a ramp surface 62 extending transversely to and away from the yarn take-up channel outlet 32, guiding the yarn 1, which is inserted into the yarn insertion recess 8, towards the bottom of the cutting opening of the yarn cutting unit 20.
  • the yarn guide ramp 60 projects beyond the yarn take-up channel outlet 32 in the direction of yarn 2 take-up.
  • the yarn guide ramp 60 is designed and arranged correspondingly to the cutting edge of the first blade element 21, ensuring that the yarn 2 is reliably guided into the cutting base of the cutting opening.
  • the spinning box 1 is part of a spinning device of an open-end rotor spinning machine, wherein
  • the spinning device comprises a precisely driven spinning rotor, the spinning rotor cup of which rotates at high speed in a vacuum-operated rotor housing during spinning.
  • the rotor housing can be closed by a cover element formed by the spinning box 1.
  • a dissolving roller is arranged in the dissolving unit receptacle of the spinning box 1, to which the fiber bundle can be fed via the fiber tape inlet.
  • the dissolving roller is designed to break down the fiber bundle into individual fibers, whereby dirt particles and/or fiber remnants detached from the fiber bundle are discharged via the cleaning housing into a dirt channel of the spinning machine.
  • a fiber guide channel arranged in the spinning box 1 is operatively connected to the dissolving roller, through which the broken-down fibers can be fed to the spinning rotor cup.
  • a yarn extraction channel inlet Opposite the spinning rotor cup is a yarn extraction channel inlet, wherein the yarn extraction channel 30 extends from the yarn extraction channel inlet to the yarn extraction channel outlet 32 opposite the yarn exit opening 4 within the spinning box 2.
  • the generated yarn 2 is drawn from the spinning box 1 through the yarn exit opening 4 in a direction leading away from the spinning box 1 and fed to a winding device to form a bobbin.
  • a yarn sensor is arranged between the spinning box 1 and the winding device to monitor the characteristics of the moving yarn 2. As soon as the yarn sensor detects a defined deviation, a controlled interruption of the spinning process occurs, accompanied by a controlled yarn cut.
  • a movable yarn clamping unit can be provided to clamp the exiting yarn 2 and guide it from the yarn exit opening 4 into the yarn insertion recess 8.
  • the yarn clamping unit can be assigned to a service unit operating the spinning device, to a spinning station encompassing the spinning device, or to the spinning device itself.
  • the yarn insertion recess 8 is associated with a further yarn sensor for detecting the yarn 2 in the yarn insertion recess 8, wherein, according to this preferred embodiment, the further yarn sensor is arranged within the spinning box 2.
  • the control unit initiates the cutting of the yarn 2 via the yarn cutting unit 20.
  • the cut yarn end section is drawn into the discharge opening by the applied negative pressure and disposed of via the cleaning housing 40.
  • the yarn clamping unit presents the cut yarn end to the yarn exit opening 4, thus placing the yarn end into the The yarn end can be drawn into the yarn take-up channel 30.
  • a suction flow is present at the yarn take-up channel outlet 32, by which the yarn end can be drawn into the yarn take-up channel 30.
  • the suction flow can preferably be generated by the compressed air supply via the compressed air connection 34 and/or by the negative pressure applied at the discharge opening.
  • a vortex air flow is generated in the area of the yarn end preparation unit by the supplied compressed air to break up the yarn end. After breaking up, the yarn end is fed to the spinning rotor in the usual manner for the continuation of spinning, while maintaining the compressed air supply and releasing the clamp, for example by releasing the yarn clamping unit.
  • the yarn end in the event of a yarn break, where a yarn end runs onto the take-up bobbin in the usual manner, the yarn end can be retrieved via a return unit and fed into the yarn take-up channel 30 through the yarn exit opening 4.
  • the return unit can be assigned to the service unit or the spinning station with the spinning device.
  • the yarn 2 can be transferred from the yarn exit opening 4 into the yarn insertion recess 8, whereby a yarn cut is made in the manner described above.
  • the severed yarn section is disposed of as described above.
  • the cut yarn end is fed manually or automatically through the yarn exit opening 4 into the yarn take-up channel and, as also described above, unwound in order to then be fed to the spinning rotor to continue spinning.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (9)

  1. Boîte de filage (1) pour une machine à filer à fibres libérées, comprenant
    une entrée de ruban de fibres pour amener une mèche de fibres à une unité de désintégration, laquelle peut être disposée dans un logement d'unité de désintégration de la boîte de filage (1),
    un orifice de sortie de fil (4), par lequel un fil filé (2) produit à partir de la mèche de fibres amenée peut être évacué de la boîte de filage (1), et
    une unité de préparation d'extrémité de fil pour préparer une extrémité de fil filé, l'unité de préparation d'extrémité de fil étant logée par la boîte de filage (1),
    l'unité de préparation d'extrémité de fil étant disposée en regard de l'orifice de sortie de fil (4) pour un transfert mutuel du fil filé (2),
    caractérisée en ce que
    la boîte de filage (1) présente un évidement d'insertion de fil (8) communiquant avec l'orifice de sortie de fil (4) et pouvant être en liaison fonctionnelle avec l'unité de préparation d'extrémité de fil,
    dans lequel le fil filé (2) peut être transféré depuis l'orifice de sortie de fil (4), l'évidement d'insertion de fil (8) s'étendant de manière définie en partant de l'orifice de sortie de fil (4) dans une direction s'éloignant de celui-ci.
  2. Boîte de filage (1) selon la revendication 1, caractérisée en ce que la boîte de filage (1) présente une première face de carter (6a) et une deuxième face de carter (6b), laquelle est adjacente à la première face de carter (6a) en formant un angle inférieur à 180°, l'orifice de sortie de fil (4) étant ménagé dans la première face de carter (6a), et l'évidement d'insertion de fil (8) s'étendant depuis l'orifice de sortie de fil (4) jusque dans la deuxième face de carter (6b) et étant au moins partiellement conformé en fente.
  3. Boîte de filage (1) selon la revendication 2, caractérisée en ce que la première face de carter (6a) et la deuxième face de carter (6b) sont formées par une pièce rapportée (6) qui peut être fixée de manière amovible à la boîte de filage (1).
  4. Boîte de filage (1) selon l'une des revendications 2 et 3, caractérisée en ce que l'unité de préparation d'extrémité de fil présente une unité de coupe de fil (20), laquelle est disposée dans la boîte de filage (1) en regard de l'évidement d'insertion de fil (8) pour couper un fil filé (2) reçu dans l'évidement d'insertion de fil (8).
  5. Boîte de filage (1) selon l'une des revendications 2 à 4, caractérisée par un capteur de fil, lequel est disposé dans la boîte de filage (1) en étant associé à l'évidement d'insertion de fil (8) pour détecter le fil filé (2) reçu dans l'évidement d'insertion de fil (8).
  6. Boîte de filage (1) selon les revendications 4 et 5, caractérisée en ce que l'unité de coupe de fil (20) peut être commandée sur la base d'un signal de détection du capteur de fil ou d'une unité de commande intermédiaire pour couper le fil filé (2) inséré dans l'évidement d'insertion de fil (8).
  7. Boîte de filage (1) selon l'une des revendications 2 à 6, caractérisée par une rampe de guidage de fil (60), laquelle est associée à l'intérieur de la boîte de filage (1) à l'évidement d'insertion de fil (8) de telle manière qu'un fil filé (2) inséré dans l'évidement d'insertion de fil (8) peut être guidé de manière définie via la rampe de guidage de fil (60).
  8. Dispositif de filage pour une machine à filer à fibres libérées, caractérisé par une boîte de filage (1) selon l'une des revendications précédentes.
  9. Procédé de rattache sur une machine à filer à fibres libérées, caractérisé par un dispositif de filage selon la revendication 8, le procédé comprenant
    une étape de coupe du fil filé (2) sortant de la boîte de filage (1),
    une étape subséquente de présentation de l'extrémité de fil filé coupée à l'orifice de sortie de fil (4) pour son introduction dans la boîte de filage (1),
    une étape suivante de préparation de l'extrémité de fil filé introduite au moyen de l'unité de préparation d'extrémité de fil, et
    une étape suivante d'amenée de l'extrémité de fil filé préparée à un rotor de filage du dispositif de filage.
EP22176977.1A 2021-06-10 2022-06-02 Boîte à filer pour un dispositif de filature à rotor à bouts ouverts Active EP4101954B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110647564.4A CN115467056B (zh) 2021-06-10 2021-06-10 用于自由端转杯纺纱装置的纺纱箱

Publications (2)

Publication Number Publication Date
EP4101954A1 EP4101954A1 (fr) 2022-12-14
EP4101954B1 true EP4101954B1 (fr) 2026-03-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22176977.1A Active EP4101954B1 (fr) 2021-06-10 2022-06-02 Boîte à filer pour un dispositif de filature à rotor à bouts ouverts

Country Status (2)

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CN115467056A (zh) 2022-12-13
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