WO2018185221A1 - Dispositif et procédé d'aspiration, de stockage temporaire et d'évacuation d'un fil, ainsi que machine textile - Google Patents

Dispositif et procédé d'aspiration, de stockage temporaire et d'évacuation d'un fil, ainsi que machine textile Download PDF

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Publication number
WO2018185221A1
WO2018185221A1 PCT/EP2018/058728 EP2018058728W WO2018185221A1 WO 2018185221 A1 WO2018185221 A1 WO 2018185221A1 EP 2018058728 W EP2018058728 W EP 2018058728W WO 2018185221 A1 WO2018185221 A1 WO 2018185221A1
Authority
WO
WIPO (PCT)
Prior art keywords
thread
suction chamber
flow
air flow
flow element
Prior art date
Application number
PCT/EP2018/058728
Other languages
German (de)
English (en)
Inventor
Thomas Gruber
Robert Hagl
Andreas HOYER
Romeo Pohn
Bernd Bahlmann
Original Assignee
Maschinenfabrik Rieter 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
Application filed by Maschinenfabrik Rieter Ag filed Critical Maschinenfabrik Rieter Ag
Priority to US16/603,404 priority Critical patent/US20210087014A1/en
Priority to EP18718735.6A priority patent/EP3606855A1/fr
Publication of WO2018185221A1 publication Critical patent/WO2018185221A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/205—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage by means of a fluid
    • 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
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • B65H67/085—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement end-finding at the take-up package, e.g. by suction and reverse package rotation
    • 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
    • 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
    • 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 device for sucking and buffering a thread with a suction chamber, wherein the suction chamber has an inlet opening and an outlet opening, which define a flow direction of the device, wherein the outlet opening for generating an air flow through the suction chamber is subjected to negative pressure, with a Arranged in the suction chamber, permeable to air and impermeable to the thread storage surface on which the thread is temporarily stored, and with a suction chamber arranged in the flow element, by means of which the air flow through the suction chamber can be conducted. Furthermore, the invention relates to a textile machine with such a device and a corresponding method.
  • a device for temporary storage of a double thread formed from two thread components is known.
  • the device is arranged between a thread supply device and a thread connecting device on a textile machine in order to be able to temporarily receive the thread further delivered by the thread supply device after a thread break during the joining of the thread ends.
  • the device comprises a suction chamber in which a storage surface is arranged, on which the thread can be temporarily stored.
  • the device is expensive to operate, since a disposal of the thread from the suction chamber via an additional Hilfssaugbib done.
  • the device is not suitable for sucking and removing a thread from a spool, for example on a spinning or winding machine.
  • Object of the present invention is therefore to provide a device that is easy to operate. Furthermore, a corresponding textile machine and a corresponding method are proposed. The object is achieved by a device and a method having the features of the independent claims.
  • Proposed is a device for sucking and buffering a thread with a suction chamber, wherein the suction chamber has an inlet opening and an outlet opening, which define a flow direction of the device, and wherein the outlet opening for generating an air flow through the suction chamber can be acted upon with negative pressure, with an in arranged the suction chamber, permeable to air and impermeable to the thread storage surface on which the thread is temporarily stored, and with a suction chamber arranged in the flow element, by means of which the air flow through the suction chamber can be conducted.
  • a thread end which has accumulated on the spool can be found on the spool.
  • the coil can be operated counter to a winding direction and with the air flow, which leads away from the coil through the suction chamber, are acted upon.
  • the thread end separates from the coil and is sucked by the air flow in the suction chamber.
  • the thread is fixed by the induced draft of the suction chamber in a defined position, from which it can be picked up by various handling organs of a piecing and spun again.
  • a portion of the thread unwound from the bobbin Prior to piecing, a portion of the thread unwound from the bobbin is cut to remove possible thread defects and create a defined thread end for re-spinning.
  • An additional thread length required for piecing for example for forming a thread loop, is thereby provided in a manner known per se by unwinding the thread from the reel.
  • This part of the thread to be separated can be picked up and stored temporarily during suction through the device until it is then cut and sent for disposal.
  • the shelf can be formed for example as a sieve.
  • the flow element by means of the flow element, the air flow and thus also the thread or the accumulated thread balls are guided through the suction chamber.
  • the accumulation of the thread to the thread ball has the advantage that the thread ball can be removed as a whole and the thread can be recycled through this better.
  • the cached thread at least a portion of the cached thread, can also be removed from the device for re-spinning, with the thread bundle being released, in order to provide a thread length required for piecing.
  • it is necessary to cut the thread so that part of the cached thread remains in the device and is removed from the device.
  • the air flow is guided by the suction chamber by means of the flow element.
  • the device is equally suitable for the two methods described in piecing.
  • the suction chamber is subdivided into a first region and a second region by means of the deposition surface, and that the flow element is guided between a first position, in which the air flow is guided through the deposition surface and through the second region, and a second position which the air flow is guided past the storage area by the first area, is adjustable. If in the first position of the flow element, the air flow is passed through the storage surface, although the air flow is transmitted, but the thread held back, so he takes off there. If, however, in the second position of the flow element, the air flow is guided past the storage surface, can be solved with the air flow of the thread or accumulated on the storage surface thread balls from the shelf and through which they are disposed of suction.
  • the inlet opening is designed as a common inlet opening of the first and of the second area, wherein the thread can be sucked through the common inlet opening into the suction chamber. Due to the common inlet opening, the device is suitable for various applications on various textile machines, for example. Also, to take on a spinning or winding machine after an interruption of production a coil-side thread end and dissipate.
  • the flow element is adjustable in a third position in which the outlet opening of the suction chamber is shut off.
  • the air flow through the suction chamber is thereby interrupted.
  • the flow element comprises a pivotable flap and / or a displaceable slide and / or a rotatable rotary valve.
  • the pivotable flap, the first, the second and / or the third position can be particularly easily realized by pivoting.
  • the Flow element shut off the first region of the suction chamber such that the air flow can flow only through the storage surface into and through the second region.
  • the flow element may shut off the second region of the suction chamber such that the path for the air flow through the deposition surface and the second region is obstructed while the path through the first region is released for the air flow.
  • the flow element can completely seal off the suction chamber, for example in the region of the outlet opening, so that the air flow is blocked.
  • the shelf is fixed, i. stationary and immovable, is arranged in the suction chamber. It is thus only the flow element between the first position, the second position and possibly the third position adjustable, so that the constructive and control engineering effort is low. In addition, the danger of pinching pieces of thread or ablated thread residues is reduced in the suction chamber at a fixed shelf.
  • the storage surface is also adjustably arranged in the suction chamber. In this case, for example, the storage space for different machines, different thread types or different flow conditions can be set differently.
  • the support surface may be adjustable in addition to the flow element between at least two positions, for example, to support the removal of the cached thread by tilting the support surface. The storage surface can be adjusted separately from the flow element or together with this.
  • the support surface is oriented substantially in a longitudinal direction, ie in the flow direction, in the suction chamber.
  • the storage area divides the suction chamber into the first and the second area, which extend in this case substantially parallel to each other.
  • the shelf can also be inclined, ie under a win- angle to the flow direction, which is defined by the inlet and outlet openings of the suction chamber, be arranged. In this way, the removal of the stored thread can be facilitated by the changed after the switching of the flow element air flow.
  • the support surface is oriented parallel or at a shallow angle to the flow direction. In this way, a particularly ordered storage of the thread, in particular in offset juxtaposed loops can be achieved, which facilitates the subsequent removal of the thread from the device.
  • the flow element is arranged in the flow direction behind the support surface.
  • the support surface and the flow element interact directly or the air flow can be conducted in a simple manner through the flow element either through or past the support surface.
  • the design effort is kept low.
  • the flow element with the flow direction from the first position to the second position is adjustable. If the thread is to be disposed of after the temporary storage on the outlet opening, the movement of the flow element in the material flow direction, ie the direction in which the thread is removed, ensures that the thread can not jam on the flow element.
  • a thread monitor is arranged in the flow direction in front of the storage surface, in particular in the region of or in the inlet opening. With its help it can be seen whether a thread is present in the suction chamber or not. As a result, it can be recognized early on whether the thread search on the bobbin was successful or not.
  • the thread monitor may be connected to a controller which, depending on the detection of a thread, can adjust the flow element between see the first, the second and possibly the third position causes.
  • the thread monitor is preferably designed as an optical sensor.
  • the thread monitor may comprise, for example, a light barrier, by means of which it can be detected without contact, whether the thread is arranged in the suction chamber. Additionally or alternatively, the thread monitor can also include a microwave sensor, which can also detect the thread without contact in the suction chamber.
  • An advantage of the arrangement of the thread monitor in the suction chamber it is also that the thread performs at this point compared to the arrangement in the region of the mouth of a suction nozzle only a relatively small movement and thus can be easily detected. It is also conceivable, however, not to arrange the thread monitor in the inlet region of the suction chamber, but in the exit region of a suction nozzle connected to the suction chamber or in an intermediate piece which connects the suction nozzle to the suction chamber.
  • the inlet opening is connected directly or via an intermediate piece to a suction nozzle, in particular a suction nozzle for sucking a yarn from a coil.
  • the device is thereby suitable not only for sucking, but also for searching a thread end from a bobbin surface.
  • suction chamber and / or the intermediate piece and / or the suction nozzle it is advantageous if this is / are embodied as an injection molded part, in particular as a plastic foam casting.
  • the thread monitor is arranged in a sensor housing made of plastic injection molding.
  • the sensor housing can also be made in one piece with the suction chamber or the intermediate piece or the output region of the suction nozzle. If the thread monitor is arranged in such a sensor housing, then this is always correct with respect to aligned to the monitored area and protected from contamination.
  • the thread monitor can thereby be integrated in a simple manner in the device or the suction chamber.
  • the invention further relates to a textile machine, in particular a spinning machine or a winding machine, with a plurality of in the longitudinal direction of the textile machine juxtaposed jobs.
  • the jobs each have a device as described above.
  • the device is thus advantageously designed as a workstation-specific device and can be used on a machine with single-user automation.
  • the outlet openings of the suction chambers are each connected to a vacuum channel extending in the longitudinal direction of the textile machine.
  • the cached thread residues or thread balls can be disposed of in a conventional manner through the vacuum channel of the machine.
  • the invention relates to a method for sucking and buffering a thread, in particular for sucking a thread from a spool.
  • the method can be carried out by means of a device which is designed according to one or more features of the preceding and / or following description.
  • the thread is sucked into a suction chamber by means of an airflow passing from an inlet opening to an outlet opening, the thread being buffered on a deposition surface disposed in the suction chamber, and wherein the flow of air through the suction chamber by means of a flow element disposed in the suction chamber is directed.
  • the suction chamber is subdivided by means of the depositing surface into a first region and a second region, that for sucking and caching the thread, the flow element is moved to a first position, in which the air flow through the storage area and through the second area is performed.
  • the entry of the thread into the suction chamber is monitored by means of a thread monitor.
  • the thread monitor can then emit a corresponding signal to a controller when detecting or possibly also not recognizing the thread, which causes the adjustment of the flow element between the first position, the second position and possibly the third position.
  • the thread can be cached in the form of a ball and later be sucked out of the device and the disposal are supplied.
  • the thread is loosely and laterally offset stored on the storage surface during suction, wherein the storage surface is added successively.
  • the thread is hereby filed on the shelf, which facilitates the subsequent removal of the thread from the suction chamber.
  • Such removal of the thread from the suction chamber via the entrance opening may, for example, be required during piecing of the thread in order to provide a required additional length of the thread for forming a thread loop.
  • the effect is used that the thread increasingly seals the cross-section of the shelf, so that newly entering partial lengths of the thread preferably place where the cross-section is still free. Due to the rotation of the yarn, the thread is deposited while looping.
  • a predetermined length of the thread is sucked into the suction can.
  • This can be used, for example, to clean a defective piece of yarn out of the thread or else to provide a required, defined length of the cached thread from the suction chamber in the piecing process.
  • the suction of the defined length of the thread can for example take place in that the thread monitor is arranged at a distance corresponding to the desired, predetermined length, in the suction chamber or the exit region of the suction nozzle or the intermediate piece.
  • the thread monitor can be connected to a control device of the workstation of the textile machine, which in turn stops the reverse rotation of the spool and thus the further delivery of the thread into the suction nozzle and / or the suction chamber.
  • the suction of the predetermined length of the thread can also be done by a certain predetermined time during reverse rotation of the coil or a certain number of revolutions of the coil, taking into account the current coil diameter.
  • the cached thread is partially removed again through the inlet opening.
  • the flow element preferably remains in the first position, in order to ensure the orderly removal of the thread by the suction belt still acting on the thread. By this restraining force on the thread, the formation of coils and twists in the thread can be avoided.
  • a thread loop is formed from the thread taken through the inlet opening, wherein preferably the flow element also remains in the first position in order to ensure a constant thread tension during formation of the thread loop. The risk of twisting and winding is further reduced.
  • the flow element is preferably moved to a second position, in which the air flow is guided past the depositing surface through the first region.
  • the control causes the adjustment of the flow element from the first position to the second position to the cut Dissipate the thread.
  • the flow element is moved to a third position after the removal of the thread to block the flow of air through the suction chamber. The suction chamber is thereby shut off and the air flow is interrupted.
  • the flow element is moved to the second position in order to search for the thread before it is sucked, ie before the thread is sucked into the suction chamber.
  • the air flow is thereby not guided by the filing surface, but at this passing through the first area during the thread search. Since the storage surface obstructs the air flow somewhat despite the air permeability, the volume flow through the suction chamber is also reduced when passing through the storage area. If now the air flow is guided past the storage surface by means of the flow element in order to search for the yarn, then the full volume flow for the yarn search is available. This increases the effectiveness of suction and caching. Moreover, this also makes it possible to manage on the entire textile machine with only one vacuum level.
  • a first vacuum duct was provided on a rotor spinning machine, which supplies the workplaces with spinning vacuum, and a second vacuum duct, which provides a higher vacuum level for maintenance work at the workstations.
  • the entry of the thread is monitored in the suction chamber by the thread monitor.
  • the thread monitor detects the thread
  • a signal will be given to the controller, which then causes the adjustment of the flow element from the second position to the first position.
  • the air flow is now, as described above, passed through the storage surface into and through the second area, so that the thread between can be stored.
  • the control causes the cutting of the thread as described above.
  • FIG. 1 a shows a schematic view of a workstation of a textile machine in regular operation, in which a thread is wound onto a reel,
  • FIG. 1 b shows a schematic view of the workstation in a situation in which the thread has been torn and has accumulated on the spool
  • FIG. 1c shows a schematic view of the work station in a situation in which the thread is sucked into the device for sucking, buffering and discharging a thread
  • FIG. 1d shows a schematic view of the workstation in a situation in which the thread is fed back to the work site for piecing;
  • 2a is a schematic sectional view of a device for sucking, buffering and discharging a thread a flow element in a third position
  • FIG. 2b shows a schematic sectional view of the device for sucking, buffering and discharging a thread with a flow element in a second position
  • FIG. 2c shows a schematic sectional view of the device for sucking, buffering and discharging a thread with a flow element in a first position with a thread laying down
  • FIG. 2d shows a schematic sectional view of the device for sucking, buffering and discharging a thread with a flow element in the first position with a cached thread
  • 2e shows a schematic sectional view of the device for sucking, buffering and discharging a thread with a flow element in the second position with thread to be removed
  • FIG. 2f shows a schematic sectional view of the device for sucking, buffering and discharging a thread with a flow element in the third position
  • Figure 3 is a schematic representation of the loop-shaped offset
  • Figure 4 is a schematic representation of the formation of a thread loop with removal of the cached thread from the suction chamber.
  • FIG. 1a shows a schematic sectional view of a workstation of a textile machine to which the device 1 for sucking, temporarily storing and discharging a thread 2 can be advantageously used.
  • the device 1 is shown here only symbolically and is described in more detail in Figures 2a - 2f.
  • the job is present as a thread-producing spinning station of a spinning machine with a spinning element 17th educated. Likewise, however, the job could also be designed as a winding unit of a dishwasher.
  • the workplace comprises a suction nozzle 20, which is connected to the device 1 and through which the thread 2 can be sucked.
  • the suction of the thread 2 can be monitored by means of a thread monitor 13, which as shown here, in the exit region of the suction nozzle 20, a subsequent to the suction nozzle suction pipe or adapter (not shown) or can be arranged directly in the device 1, such as Figures 2a - 2f removable.
  • the device 1 could also be designed in one piece with the suction nozzle 20.
  • the suction nozzle 20 is disposed on a spool 21, can be sucked through a thread 2 accumulated on the spool 21 after an interruption of the production.
  • the bobbin 21 is driven by a winding roller 22 in the direction of rotation 23.
  • the thread 2 is produced by the spinning element 17 and withdrawn from delivery rollers 18.
  • the thread runs through the suction nozzle 20 during production.
  • the thread 2 passes through an opening 19 in the suction nozzle 20 and leaves it at its mouth to be wound onto the spool 21.
  • the device 1 can also be used at a workstation at which the thread runs outside of the suction nozzle 20 during its production and only reaches the suction nozzle 20 for re-spinning or splicing.
  • a holder 24 with an eyelet 26 is arranged adjacent to the spinning element 17.
  • the holder 24 can be pivoted through the opening 19 in the suction nozzle 20, so that the eyelet 26 is located in the suction nozzle 20.
  • a sealing member 25 is further arranged, which seals the opening 19 when the eyelet 26 is pivoted.
  • Figure 1 b shows a schematic sectional view of the job, in which after an interruption of production, for example by thread breakage of the thread 2 (not shown here) accumulated on the spool 21. For re-spinning the thread 2 must be found on this and unwound to a certain length, wherein the search is carried out by means of the suction nozzle 20 and the device 1.
  • the holder 24 together with the sealing element 25 is pivoted upwardly to the opening 19.
  • the arranged on the holder 24 eyelet 26 is inserted into the suction nozzle 20, so that during the suction of the yarn 2 into the suction nozzle 20, this is also guided through the eyelet 26.
  • the suction of the thread 2 is effected by an air flow 4.
  • the suction nozzle 20 is connected via device 1 to a vacuum source, not shown here, for example to a vacuum channel of the textile machine.
  • Figure 1 c shows the job in a further situation in which the end 7 of the yarn 2 and the yarn 2 is sucked from the spool 21 and passed through the eyelet 26 in the device 1.
  • Figure 1d shows the job in another situation with a returned to the spinning element 17 thread 2.
  • thread 2 was thereby formed by pivoting down the holder 24, first a loop of thread 29.
  • the formation of the thread loop 29 is described in more detail in FIG.
  • a cutting unit 27 is arranged, which separates the thread 2 or the thread loop presented for re-spinning. This results in two parts of the thread 2, namely the separated by the cutting unit 27 thread 2 with a newly formed end 7, which is disposed of by the device 1, and a zuzuspinnender thread 2, which is guided back to the spinning element 17.
  • the air flow 4 must be controlled by the suction nozzle 20 and the device 1 in different ways.
  • a storage surface 5 and a flow element 6 are arranged in the device 1, whose operation is described in the following figures 2a - 2f.
  • FIGs 2a - 2f it should be noted in Figures 2a - 2f that the device 1 and the air flow 4 opposite to the device 1 and the air flow 4 of Figures 1 a - 1 d is shown.
  • the air flow 4 flows in the drawing from the opening 19 from right to left through the suction nozzle 20 and the device 1, whereas the air flow 4 of Figures 2a - 2f in the drawing from left to right through the device 1 flows.
  • FIGS. 2a-2f each show a sectional view of the device 1 during various method steps.
  • the device 1 has a suction chamber 3 with an outlet opening 9, which is acted upon to generate the air flow 4 with negative pressure.
  • the outlet opening 9 is connected for example with a vacuum channel of the textile machine.
  • the thread 2 is sucked into the device 1 by means of the air flow 4 and can be transported therethrough.
  • a storage surface 5 is arranged in the suction chamber 3, which is permeable to air and impermeable to the yarn 2 and at which the yarn 2 can be temporarily stored.
  • the storage surface 5 may be formed, for example, as a sieve or perforated plate.
  • the storage surface 5 can also be made of a plastic.
  • a flow element 6 is further arranged, by means of which the air flow 4 can be directed through the device.
  • the suction chamber 3 also has an inlet opening 8, through which the thread 2 can be sucked into the suction chamber 3 and directed to the depositing surface 5. Through the outlet opening 9, the thread 2 can then emerge again and be disposed of.
  • the storage surface 5 divides the suction chamber 3 into a first region 14 and a second region 15.
  • the first region 14 furthermore serves as Thread storage in which the thread 2 can be cached.
  • the support surface 5 is arranged parallel to the direction of flow and in a central region of the suction chamber 3.
  • the storage surface can also be arranged at an angle to the flow direction.
  • the flow element 6 is arranged. With the help of the flow element 6, the air flow 4 can be performed so that it can be selectively passed through the shelf 5 or past her. Further, with the aid of the flow element 6, the suction chamber 3 can be sealed, so that the air flow 4 is interrupted. In order to be able to guide the air flow 4 with the aid of the flow element 6, it can be rotated about an axis of rotation 10 in this exemplary embodiment.
  • the suction chamber 3 has a first stop 1 1, to which the flow element 6 can be rotated.
  • the flow element 6 is in contact with the first stop 11 (see Figures 2c and 2d)
  • the flow element 6 is in a first position, in which the air flow 4 passes through the depositing surface 5 into and through the second region 15 is guided. The air flow 4 through the first area is blocked.
  • the suction chamber 3 also has a second stop 12, to which the flow element 6 can also be rotated.
  • the flow element 6 is in a second position, in which the air flow 4 is guided past the support surface 5.
  • the flow element 6 blocks the second region 15. If the flow element 6 seals the second region 15 on the second stop 12, the air flow 4 can no longer flow through the deposition surface 5 and instead is guided past it through the first region 14.
  • the stops 1 1, 12 are not essential. It would also be possible, for example, to set the correct position of the flow element by means of a stepper motor.
  • the suction chamber 3 can be completely shut off.
  • the flow element 6 can be adjusted to a third position, so that it completely covers the outlet opening 9 of the suction chamber 3 and, as a result, seals off. As a result, the air flow 4 is completely interrupted.
  • a thread monitor 13 by means of which the thread 2 can be detected in the suction chamber 3.
  • the thread monitor 13 may be, for example, an optical sensor, such as a light barrier sensor, and / or a microwave sensor, which may preferably detect without contact, whether a thread 2 is in the suction chamber 3 or not.
  • an optical sensor such as a light barrier sensor, and / or a microwave sensor, which may preferably detect without contact, whether a thread 2 is in the suction chamber 3 or not.
  • FIG. 2 a shows the device 1 when, for example, the thread 2 is spun normally with the aid of the spinning element 17 and wound onto a spool 21 (see FIG. 1 a). There is no thread break or the like. The suction and handling of the thread 2 is not required, so that the energy saving the flow element 6, the outlet opening 9 completely covers and thereby seals, so that the air flow 4 is interrupted. The flow element 6 is in the third position.
  • FIG. 2b shows the device 1 when the thread 2 is torn. In order to be able to re-spind the thread 2, a thread 2 accumulated on the spool 21 is searched with the aid of the air flow 4.
  • the flow element 6 is adjusted to the second position, wherein the flow element 6 is moved to the second stop 12 so that it shuts off the second region 15 with this, to prevent the air flow 4 flows through the support surface 5.
  • the air flow 4 is thereby introduced through the inlet opening 8 into the suction chamber 3, guided past the depositing surface 5 through the first region 14 and guided out of the suction chamber 3 through the outlet opening 9.
  • One advantage of this is that the air flow 4 is not decelerated by the storage surface 5, so that a high suction effect is available for searching the yarn 2 on the spool 21.
  • the yarn 2 is thus searched with a maximum volume flow through the air flow 4 on the coil 21.
  • the advantage would be a lower control effort, since the flow element 6 must be adjusted less frequently.
  • a thread monitor 13 In the region of the inlet opening 8, a thread monitor 13 is arranged, which can detect the presence of a thread 2 in the region of the inlet opening 8. It can therefore be recognized very early on whether the thread search was successful.
  • the thread monitor 13 is connected to a controller, not shown here, which can adjust the flow element 6 upon detection of the thread 2 in this embodiment. After the entry of the end 7 of the thread 2, which is detected by the thread monitor 13, the controller can cause the flow element 6 is moved to the first position, so that the air flow 4 is guided by the support surface 5. In the present embodiment, this is done by the flow element 6 is rotated to the first stop 1 1.
  • the flow element 6 can advantageously before the thread 2 until the first stop 1 1 is reached, be adjusted.
  • the thread 2 can thereby safely reach the storage surface 5, wherein pinching of the thread 2 between the first stop 1 1 and the flow element 6 is prevented.
  • this step of adjusting the flow element 5 is omitted, since this is already in the first position.
  • Figure 2c shows the device 1 after detecting the thread 2 by the thread monitor 13.
  • the flow element 6 is adjusted in the first position, in this embodiment, the flow element 6 is moved to the first stop 1 1 to the air flow 4 through the air-permeable storage surface 5 to lead.
  • a yarn ball 16 forms in the yarn storage chamber 7, wherein the yarn 2 is temporarily stored or deposited on the storage surface 5.
  • the formation of the Fadenknäuels 16 is advantageous because this is compressed in contrast to the extended thread 2 and occupies less space in a collecting container.
  • the extended thread 2 there is a risk that it is tangled to components in the suction chamber 3 or to components of a vacuum channel in which the thread 2 is discharged, and then manually removed, which is time-consuming.
  • the thread ball 16 is shown as a disordered filing of the thread 2.
  • the filing of the thread 2 is arranged in order to remove it again from the suction chamber 3 can. This is shown in FIG.
  • FIG. 2d shows the device 1 with the thread ball 16 temporarily stored in the first area 14 after the thread 2 has been cut off by the cutting unit 27 (see FIG.
  • the successful cutting of the thread 2 can also be detected by the thread monitor 13. This can be done by the thread monitor 13 no longer recognizing a thread 2 over a predetermined period of time.
  • Figure 2e shows the device 1 with the thread ball 16, which is disposed of.
  • the flow element 6 is adjusted to the second position, so that the second region 15 is sealed and the air flow 4 is guided past the support surface 5.
  • the adjustment of the flow element 5 is caused by the controller as soon as the thread monitor 13 has detected the successful cutting of the thread 2.
  • the air flow 4 can flow substantially unhindered through the first region 14 of the suction chamber 3 and thereby conveys the thread ball 16 through the outlet opening 9 away. It is particularly advantageous that the adjustment of the flow element 5 takes place in the second direction in the same direction in which the thread ball 16 is discharged. Jamming of the thread 2 on the flow element 5 is thereby avoided.
  • FIG. 2f shows the device 1 after the thread ball 16 has been disposed of.
  • the flow element 6 is again adjusted to the third position, so that it seals the outlet opening 9.
  • the thread 2 is spun and normal operation resumed at the workplace.
  • Figure 3 shows a schematic representation of a loop-shaped and laterally offset storage of the thread 2 on the support surface 5 in the suction chamber 3. Due to the obliquely or parallel to the flow direction arranged storage surface 5, the sucked end 7 of the thread 2 due to the still very high air flow to first sucked a first part of the tray 5, here, for example, the left edge area, where the end 7 is attached to a first portion of the thread 2. At the same time the storage surface 5 is added to a small proportion. Due to the rotation of the thread 2, this then forms a loop and a second section of the thread 2 is cut parallel to the first section on the storage surface 5. suggests that the thread 2 preferably attaches where there is no thread 2 and the air flow 4 through the suction chamber 3 is still effective.
  • Figure 4 shows how the figures 1 a - 1 d a job of a textile machine in a schematic sectional view.
  • the same components are provided with the same reference numerals as in Figures 1 a - 1 d, so that will be discussed below only on the differences from the figures mentioned. Shown is a situation in which after the suction of the thread 2 in the device 1 by pivoting down the holder 24, a thread loop 29 was formed from the thread 2.
  • the thread loop 29 it is necessary to provide an additional length of the thread (here symbolized by the dotted line). This can be done according to the present example in that previously a defined length of the thread was sucked, which corresponds to this required additional length. As already described, the defined length can be sucked in by the spool 21 being rotated back for a certain period of time or a certain number of revolutions. Since the flow element 6 is in the first position during the suction, a constant, constant restraining force is exerted on the thread 2, which keeps the thread 2 under a uniform tension and thereby a winding formation in the sucked Thread 2 prevents. In addition, the thread is deposited in offset loops in the suction chamber 3 of the device 1.
  • the flow element 6 remains in the first position.
  • the thread loop is formed with dissolution of the cached thread ball 16 in the suction chamber 3 with a stationary coil 21. Since a retraction force is still exerted on the thread 2 by the air flow 4 during the downward pivoting, a constant restraining force is exerted on the thread 2 during the formation of the thread loop 29, which prevents the formation of a winding.
  • the thread loop As an alternative to the formation of the thread loop from the cached thread described in connection with FIG. 4, it is of course also possible to form the thread loop in a known manner by unwinding the thread from the reel. In this case, the entire, cached in the device thread is removed after cutting by the flow element is moved to the second position and thereby sucked the cached thread with the air flow and the disposal is supplied.

Landscapes

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

Abstract

L'invention concerne un dispositif (1) d'aspiration et de stockage temporaire d'un fil (2). Le dispositif comporte une chambre d'aspiration (3), la chambre d'aspiration (3) étant dotée d'une ouverture d'entrée (8) et d'une ouverture de sortie (9), lesquelles définissent une direction d'écoulement. L'ouverture de sortie (9) peut être soumise à l'action d'une dépression pour générer un écoulement d'air (4). De plus, le dispositif comporte une surface de réception (5) disposée dans la chambre d'aspiration (3), au niveau de laquelle le fil (2) peut être stocké de manière temporaire, et un élément d'écoulement (6) disposé dans la chambre d'aspiration (3), à l'aide duquel l'écoulement d'air (4) peut être acheminé à travers la chambre d'aspiration (3). La chambre d'aspiration (3) est divisée en une première zone (14) et en une seconde zone (15) au moyen de la surface de réception (5). L'élément d'écoulement (6) peut être ajusté entre une première position, dans laquelle l'écoulement d'air (4) est guidé à travers la surface de réception (5) et à travers la seconde zone (15), et une deuxième position, dans laquelle l'écoulement d'air (4) est guidé le long de la surface de réception (5) à travers la première zone (14). Une machine textile comprenant une pluralité de postes de travail disposés de manière juxtaposée dans le sens longitudinal de la machine textile est caractérisée en ce que les postes de travail comportent respectivement un dispositif de ce type. Dans un procédé correspondant d'aspiration et de stockage temporaire d'un fil (2), le fil (2) est aspiré au moyen d'un écoulement d'air (4) dans la chambre d'aspiration (3) et est stocké temporairement sur une surface de réception (5) disposée dans la chambre d'aspiration (3). L'écoulement d'air (4) est acheminé à travers la chambre d'aspiration (3) à l'aide de l'élément d'écoulement (6). La chambre d'aspiration (3) est divisée en une première zone (14) et en une seconde zone (15) au moyen de la surface de réception (5), et l'élément d'écoulement (6) est ajusté entre les positions décrites.
PCT/EP2018/058728 2017-04-06 2018-04-05 Dispositif et procédé d'aspiration, de stockage temporaire et d'évacuation d'un fil, ainsi que machine textile WO2018185221A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US16/603,404 US20210087014A1 (en) 2017-04-06 2018-04-05 Device and Method for Sucking in, Temporarily Storing, and Leading Away a Thread, and Textile Machine
EP18718735.6A EP3606855A1 (fr) 2017-04-06 2018-04-05 Dispositif et procédé d'aspiration, de stockage temporaire et d'évacuation d'un fil, ainsi que machine textile

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017107424.4 2017-04-06
DE102017107424.4A DE102017107424A1 (de) 2017-04-06 2017-04-06 Vorrichtung und Verfahren zum Ansaugen, Zwischenspeichern und Abführen eines Fadens sowie Textilmaschine

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WO2018185221A1 true WO2018185221A1 (fr) 2018-10-11

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US (1) US20210087014A1 (fr)
EP (1) EP3606855A1 (fr)
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
EP3511275A1 (fr) * 2018-01-16 2019-07-17 Maschinenfabrik Rieter AG Procédé de mise en place automatique d'un fil sur un poste de travail d'une machine textile ainsi que machine textile
CN111153284A (zh) * 2018-11-08 2020-05-15 拉卡什米机械厂有限公司 用于环锭纺纱机的断纱挑纱装置

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
DE102021125996A1 (de) * 2021-10-07 2023-04-13 Maschinenfabrik Rieter Ag Verfahren und Handhabungseinrichtung zum Überführen eines Faserbandes von einer Spinnkanne in eine Arbeitsstelle

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EP0352539A1 (fr) * 1988-07-26 1990-01-31 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Dispositif et procédé pour stocker du fil
DE3908463A1 (de) 1989-03-15 1990-09-20 Stahlecker Fritz Vorrichtung zum zwischenspeichern eines doppelfadens
DE4142636C1 (en) * 1991-12-21 1993-03-18 Rieter Ingolstadt Spinnereimaschinenbau Ag, 8070 Ingolstadt, De Open=end friction spinning machine - has two friction rolls connected to suction source, yarn storage unit front opening etc., providing guide to wedge gap without curling during spinning
EP0662441A1 (fr) * 1994-01-11 1995-07-12 SAVIO MACCHINE TESSILI S.r.l. Procédé et dispositif d'aspiration et d'enlèvement automatique de restes de fibres et de poussière dans un poste de bobinage
DE19636395A1 (de) * 1996-09-07 1998-03-12 Schlafhorst & Co W Verfahren und Vorrichtung zum Anspinnen einer Offenend-Spinnstelle nach einem Fadenbruch
DE102012102695A1 (de) * 2012-03-29 2013-10-02 Maschinenfabrik Rieter Ag Vorspinnmaschine mit einer Anordnung zur Detektion und Entfernung von Garnfehlern
EP3135618A2 (fr) * 2015-07-31 2017-03-01 Rieter Ingolstadt GmbH Procede d'aspiration d'un fil a partir d'une bobine et dispositif correspondant
EP3141508A1 (fr) * 2015-09-08 2017-03-15 Murata Machinery, Ltd. Machine de renvideur de fil

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DE102013102770A1 (de) * 2013-03-19 2014-09-25 Maschinenfabrik Rieter Ag Spinnstelle einer Spinnmaschine sowie Verfahren zum Betrieb derselben

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Publication number Priority date Publication date Assignee Title
EP0352539A1 (fr) * 1988-07-26 1990-01-31 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Dispositif et procédé pour stocker du fil
DE3908463A1 (de) 1989-03-15 1990-09-20 Stahlecker Fritz Vorrichtung zum zwischenspeichern eines doppelfadens
DE4142636C1 (en) * 1991-12-21 1993-03-18 Rieter Ingolstadt Spinnereimaschinenbau Ag, 8070 Ingolstadt, De Open=end friction spinning machine - has two friction rolls connected to suction source, yarn storage unit front opening etc., providing guide to wedge gap without curling during spinning
EP0662441A1 (fr) * 1994-01-11 1995-07-12 SAVIO MACCHINE TESSILI S.r.l. Procédé et dispositif d'aspiration et d'enlèvement automatique de restes de fibres et de poussière dans un poste de bobinage
DE19636395A1 (de) * 1996-09-07 1998-03-12 Schlafhorst & Co W Verfahren und Vorrichtung zum Anspinnen einer Offenend-Spinnstelle nach einem Fadenbruch
DE102012102695A1 (de) * 2012-03-29 2013-10-02 Maschinenfabrik Rieter Ag Vorspinnmaschine mit einer Anordnung zur Detektion und Entfernung von Garnfehlern
EP3135618A2 (fr) * 2015-07-31 2017-03-01 Rieter Ingolstadt GmbH Procede d'aspiration d'un fil a partir d'une bobine et dispositif correspondant
EP3141508A1 (fr) * 2015-09-08 2017-03-15 Murata Machinery, Ltd. Machine de renvideur de fil

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3511275A1 (fr) * 2018-01-16 2019-07-17 Maschinenfabrik Rieter AG Procédé de mise en place automatique d'un fil sur un poste de travail d'une machine textile ainsi que machine textile
US10907278B2 (en) 2018-01-16 2021-02-02 Maschinenfabrik Rieter Ag Method for automatically piecing a thread at a workstation of a textile machine, and textile machine
CN111153284A (zh) * 2018-11-08 2020-05-15 拉卡什米机械厂有限公司 用于环锭纺纱机的断纱挑纱装置
CN111153284B (zh) * 2018-11-08 2022-09-06 拉卡什米机械厂有限公司 用于环锭纺纱机的断纱挑纱装置

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US20210087014A1 (en) 2021-03-25
DE102017107424A1 (de) 2018-10-11

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