• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a swirling device (10) for swirling a synthetic multifilament thread (2) by means of a pretensioned fluid working medium (4), the swirling device (10) being a thread treatment channel (6) which is designed to pass through and swirl the multifilament thread (2) , wherein the thread treatment channel (6) is defined by wall sections which have a nozzle wall section (1) in which a nozzle passage opening (3) for supplying the pretensioned fluid working medium (4) is formed, and a baffle wall section (5) on which the working medium (4) is distributed, wherein a ventilation device is formed in a wall section defining the thread treatment channel (6), via which the working medium used and / or entrained air can be vented.
    公开号:CH715943A2
    申请号:CH00220/20
    申请日:2020-02-24
    公开日:2020-09-15
    发明作者:Matthias Evertz；Denis Bauer
    申请人:Oerlikon Textile Gmbh & Co Kg；
    IPC主号:
    专利说明:

    The invention relates to a swirling device for swirling a synthetic multifilament thread by means of a fluid pretensioned working medium.
    A generic swirl device according to the preamble of claim 1 is known from the prior art.
    For example DE 10 2008 018 079 A1 discloses a device for swirling a multifilament thread in which a pretensioned working medium, such as e.g. Compressed air is fed into a thread treatment channel via a nozzle passage opening in order to stimulate a multifilament thread guided therein to entangle its filaments forming the multifilament thread and to form tangled knots.
    A disadvantage of this swirling device is that the supplied and used pretensioned compressed air from the thread treatment channel only by means of the input openings - through which the thread enters the thread treatment channel - or by means of the output opening of the swirling device - through which the thread leaves the thread treatment channel - can escape which can counteract the entangling process of the filaments to form the tangled knots.
    It is therefore an object of the invention to provide a swirling device in which the compressed air supplied and used for swirling has no negative effect on the tangled knot formation.
    According to the invention, the object is achieved by means of the swirling device according to claim 1.
    The swirling device according to the invention allows a supplied pre-stressed fluid working medium, e.g. a pretensioned compressed air to dissipate more actively, without the used fluid working medium, or the used compressed air or air, which is carried along with the thread when passing through the thread treatment channel, can have a negative effect on the tangled knot.
    With the swirling device according to the invention, it is possible that compressed air deflected on the baffle plate is not braked by the compressed air that is already in use, thereby preventing tangled knots. Otherwise, the compressed air used must escape at the inlet opening and the outlet opening of the swirl device, which can hinder and disrupt the swirling process.
    With the swirling device according to the invention, the fluid working medium used or a compressed air stream used is offered an additional evasive and venting option so that braking and loss-making flows, for example the working medium used, cannot affect the efficiency of the swirling device. A working medium used here is e.g. to understand the compressed air supplied, which has already swirled the multifilament thread.
    Due to an improved efficiency of the swirling device by means of the venting device, less preloaded compressed air is advantageously necessary, since less counterforce has to be applied against the quantities of compressed air used. Overall, this leads to a lower consumption of compressed air, which in turn means that less energy is required to produce compressed air, which can be saved.
    [0011] Advantageous exemplary embodiments of the swirling device emerge from the subclaims.
    According to one embodiment of the swirling device, the venting device is arranged substantially transversely, obliquely, parallel and / or perpendicular relative to the course of the nozzle passage opening and is laterally bounded on both sides by a wall section in the direction of extent of the thread treatment channel. A bilateral delimitation of the venting device is to be understood as meaning that the venting device forms a through opening in the wall section defining the thread treatment channel which forms fluid contact in only one direction to the thread treatment channel, in particular transversely to the thread guiding direction. In addition, the ventilation device is circumferentially surrounded by wall sections of the thread treatment channel and is arranged at a distance from a thread insertion gap, which only has the function of inserting the thread into the interlacing device. This offers the advantage that the working medium used can be better guided away from the intermingling zone of the thread treatment channel and the working medium used does not slow down the intermingling process of the multifilament yarn.
    According to one embodiment of the swirling device, the venting device is arranged adjacent, bordering and / or at a predetermined distance from the nozzle passage opening. Depending on the position of the ventilation device relative to the nozzle passage opening, it can be actively or passively controlled when which quantity of working medium used is to be discharged.
    According to one embodiment of the swirling device, the venting device is formed in a wall section of the thread treatment channel which is opposite, in or apart from the wall section which corresponds to the nozzle wall section and / or the baffle wall section. For optimal ventilation, the ventilation device can be provided at predetermined optimal positions in the wall sections of the thread treatment channel of the intermingling device. It is thus possible to divert disruptive and braking flow conditions via the venting device in order to achieve and maintain an optimal swirling of the multifilament thread.
    According to one embodiment of the swirling device, the ventilation device has a ventilation passage opening which has a ventilation inlet opening and a ventilation outlet opening, wherein the ventilation inlet opening and the ventilation outlet opening are arranged in such a way that the ventilation inlet opening and the ventilation outlet opening are concentric to one another and / or the exhaust outlet opening concentrically to one another, or laterally are offset. Because the ventilation inlet opening and the ventilation outlet opening are arranged concentrically, eccentrically or laterally offset to one another, an undesired backflow of the working medium back into the thread treatment channel can be prevented. The ventilation outlet opening can also be defined by additional attachments on the swirling device, it being possible for corresponding bends and discharge lines to be provided.
    According to one embodiment of the swirling device, the ventilation inlet opening is arranged on the same level, above and / or below the nozzle passage opening and / or on the same level, above and / or below a thread guide region of the thread treatment channel.
    By arranging the ventilation inlet openings on the same or a different level relative to the nozzle passage opening and / or to the thread guide and thread interlacing area of the thread treatment channel, optimal ventilation is provided in the interlacing device. Based on the behavior of the supplied working medium, the position of the ventilation inlet opening is determined relative to the nozzle passage opening.
    According to one embodiment of the swirling device, a ventilation inlet opening has a predetermined opening width, the cross-sectional area of the opening width of the ventilation inlet opening being greater than the cross-sectional area of the opening width of the nozzle passage opening.
    In the swirling device according to the invention, the total opening width of the venting inlet opening of the venting device is preferably larger than the opening width of the nozzle passage opening for supplying the pretensioned working medium, so that it is ensured that the working medium used is discharged via the venting input opening and not via the nozzle passage opening, the thread insert gap , the thread inlet opening and / or the thread outlet opening of the thread treatment channel.
    According to one embodiment of the swirling device, the ventilation device has a plurality of ventilation passage openings that are linear, undulating and / or offset from one another and each have a ventilation inlet opening with a predetermined constant or variable opening width, and / or the total sum of the cross-sectional areas of the The opening widths of the ventilation inlet openings is greater than the sum of the cross-sectional areas of the opening widths of the nozzle through openings, the ratio being in the range of 1.1 <Q <1.8, whereAEk = cross-sectional area of the opening width of the ventilation inlet opening in the thread treatment channel;ADk = cross-sectional area of the opening width of the nozzle through-opening in the thread treatment channel;n1 = number of the vent inlet opening; andn2 = number of nozzle openings.
    Depending on the shape of the cross-sectional area of the mouth opening, the ventilation inlet opening and the nozzle passage opening, e.g. square, rectangular, trapezoidal, parallelogram-shaped, etc., the corresponding, mathematically appropriate area calculation formula must be used.
    According to one embodiment of the swirling device, the ventilation area of the ventilation passage opening is arranged centrally, offset, on both sides, symmetrically and / or asymmetrically to the nozzle passage opening. A ventilation area is to be understood here as the zone or the area from which the working medium used in the thread treatment channel is to be discharged. The venting area can extend over a predetermined cross section in the thread treatment channel in its longitudinal and transverse direction.
    According to an exemplary embodiment of the swirling device, the ventilation passage opening has a ventilation valve and / or a ventilation flap. The venting device can have a plurality of vent passage openings with vent valves and / or vent flaps, which can be optimally arranged in the nozzle passage opening so that used working medium can escape through a plurality of vent inlet openings. Controlled venting is possible using the vent valves or the vent flap.
    The invention will be explained with reference to the drawings, from which additional advantages and embodiments of the swirling device result.
    Brief description of the figures
    In the drawings: FIGS. 1A and 1B show, in a schematic longitudinal sectional view and in a schematic cross-sectional view, a swirling device for swirling a synthetic multifilament thread by means of a pretensioned fluid working medium; 2 shows a schematic perspective view of a first exemplary embodiment of a swirling device according to the invention with a venting device; 3 shows a cross-sectional view of the swirling device shown in FIG. 2 according to section line C-C; FIG. 4 shows a schematic longitudinal sectional view of the swirling device from FIG. 3 according to section line D-D; 5 shows, in a schematic perspective view, a second exemplary embodiment of the swirling device according to the invention with a venting device; 6 shows a cross-sectional view of the swirling device from FIG. 5 according to section line C2-C2; 7 shows a schematic perspective view of a third exemplary embodiment of the swirling device with ventilation device; 8 shows a sectional view of the swirling device from FIG. 7 according to section line E-E; 9 shows a sectional view according to section line F-F from FIG. 8 of the swirling device from FIG. 7.
    Detailed description of the preferred embodiments
    1A and 1B show, according to section lines B-B and A-A, in a schematic longitudinal sectional view and a schematic cross-sectional view, respectively, a swirling device 10 for swirling a synthetic multifilament thread 2.
    The swirling device 10 has an essentially cylindrical cross section and defines a thread treatment channel 6 which has an inlet opening and an outlet opening via which the multifilament thread 2 is introduced into and out of the thread treatment channel 6.
    The thread treatment channel 6 is defined by a baffle wall section 5 and a nozzle wall section 1 opposite the baffle wall section 5.
    In the nozzle wall section 1, a nozzle passage opening 3 is defined with a predetermined opening width DW.
    A pretensioned fluid working medium 4 is introduced via the nozzle passage opening 3 in order to swirl the multifilament thread 2, which is held above and below the swirling device 10 by thread guides 7.1 and 7.2. Ideally, the pretensioned fluid working medium 4 is thrown back on the baffle wall section 5 of the swirling device 10 and swirled in such a way that the individual filaments of the multifilament thread 2 are swirled in such a way that the individual filaments intertwine with one another and form so-called tangled knots. This swirl is indicated by arrow 14 in Fig. 1B.
    The pretensioned fluid working medium 4 is preferably compressed air, which is introduced into the thread treatment channel 6 at a constant pressure via the nozzle passage opening 3.
    A disadvantage of the swirling direction shown in FIG. 1A is that the pretensioned fluid working medium 4 tries to escape via the inlet opening and outlet opening of the swirling device 10 and can slow down and disrupt the swirling process between the filaments. The outflow of the fluid working medium 4 introduced from the inlet and outlet openings can lead to the formation of undesired interfering currents in the thread treatment channel 6, which can prevent regular tangled knots from forming.
    In order to dispose of this amount of working medium 4 which may interfere with the tangled knot formation, it is proposed according to the invention to provide the swirling device 10 with a ventilation device 11.
    In Fig. 2, a first embodiment of the swirling device 100 for swirling a synthetic thread 2 with a venting device 11 is shown in a schematic perspective view.
    The swirling device 100 according to the invention for swirling the synthetic multifilament thread 2 has a thread treatment channel 6 through which the multifilament thread 2 can be passed.
    The treatment channel 6 is defined by the wall sections 1, 3, 8 and 9, so that a substantially cylindrical thread treatment channel 6 is formed.
    In a wall section referred to as nozzle wall section 1, a nozzle passage opening 3 is formed on the one hand, via which a pretensioned fluid working medium 4 can be introduced into the thread treatment channel. The nozzle passage opening 3 is in fluid contact with the thread treatment channel 6.
    The nozzle passage opening 3 is preferably a capillary bore. The nozzle passage opening 3 has the capillary bore adjoining the thread treatment channel 3 and a feed channel 33 adjoining the capillary bore, which has a larger diameter than the capillary bore.
    In the figures, the nozzle passage opening 3 is shown on a larger scale than it is usually carried out for better understanding.
    To introduce the synthetic multifilament thread 2 into the interlacing device 100, a continuous thread insertion gap 70 running essentially parallel to the thread fluid treatment channel 6 is formed on the side of the nozzle wall section 1, via which the multifilament thread 2 can be inserted into the thread treatment channel 6, in order then to be inserted into the thread treatment channel 6 to be treated to form tangles.
    On the other hand, the thread treatment channel 6 is bounded by a baffle wall section 5 on which the pretensioned, fluid working medium 4 rebounds and forms eddy currents, which should lead to a swirling and entangling of the individual filaments of the multifilament thread 2 and thereby to the formation of tangled knots.
    In order that the used or consumed working medium 4 can escape, a venting device 11 is additionally formed in the swirling device.
    The ventilation device 11 has at least one ventilation passage opening 11.1, which is in fluid contact with the thread treatment channel 6 on the one hand and fluid contact with the ambient air of the swirling device 100, so that used working medium 4, which is supplied via the nozzle passage opening 3, escape via the ventilation device 11 can and does not form interfering currents that can slow down or worsen the intermingling process in the thread treatment channel 6.
    In a preferred embodiment, the ventilation device 11 has ventilation passage openings 11.1, 11.2 to 11.n which are arranged at regular intervals on both sides in the wall sections 8 and 9.
    It is essential here that the sum of the cross-sectional area of the inlet opening width DE of the ventilation passage openings 11.1, 11.2 to 11.n, which is in fluid contact with the thread treatment channel 6, is larger than the cross-sectional area of the opening width DW of the mouth opening of the nozzle passage opening 6, the is in fluid contact with the thread treatment channel 6.
    The ratio Q of the cross-sectional area AE is preferred, which is occupied by the orifice opening widths of the at least one ventilation passage opening 11.1 or the plurality of ventilation passage openings 11.1 to 11.n in relation to the cross-sectional opening width area AD of the nozzle passage opening 3 approximately 1.1 to 1, 8th.
    The ratio Q can e.g. can be calculated according to formula [1] if, for example, only one ventilation inlet opening 110 and one nozzle passage opening 3 are provided and each have a substantially circular cross-section and circumference:[1] is in the range of 1.1 Q 1.8, whereAE is the cross-sectional area AE of the opening width DE of the mouth opening of the vent inlet opening 110; andAD is the cross-sectional areas AD of the opening width DW of the nozzle passage opening 3, where AE can be calculated according to formula [2] and AD according to formula [3].[2] AE = DE <2> × π and[3] AD = DW <2> × π, whereDE is the opening width of the mouth opening of the ventilation inlet opening 110 into the thread treatment channel 6;DW is the opening width of the mouth opening of the nozzle passage opening 3 in the thread treatment channel 6;
    In FIGS. 3 and 4, sectional views of the ventilation device 11 are shown.
    The ventilation devices 11 have a ventilation inlet opening 110 and a ventilation outlet opening 111. The ventilation inlet opening 110 is in fluid contact with the thread treatment channel 6.
    In Fig. 3 is a schematic cross-sectional view according to the section line C-C of Fig. 2 is shown. From this, the courses of the thread insertion gap 70, the nozzle passage opening 3 and the vent passage openings 11.1 and the position of the vent inlet opening 110 and the vent outlet opening 111 can be seen.
    In an embodiment of the swirling device, not shown, the ventilation inlet opening 110 and the ventilation outlet opening 111 can also be arranged eccentrically or laterally offset to one another in order to prevent backflow or backflow of the fluid working medium 4 used. This additional eccentric or lateral offset of the ventilation inlet opening 110 in relation to the ventilation outlet opening 111 can also be realized by additional attachments on the swirling device.
    FIG. 4 shows the swirling device from FIG. 2 in a schematic longitudinal sectional view according to the section line DD from FIG. 3, the arrangement of the plurality of ventilation passage openings 11.1, 11.2 to 11.n on both sides being shown, the nozzle passage opening 3 being off-center or off-center. offset from the ventilation area 112 of the plurality of ventilation passage openings 11.1, 11.2 to 11.n.
    In an embodiment of the swirling device (not shown), the nozzle passage opening 3 can also be arranged centrally in the ventilation region 112 which is formed by the ventilation passage openings 11.1 to 11.n.
    Fig. 5 shows in a schematic perspective view a second embodiment of the swirling device 100 with a plurality of venting devices 11, 11.1, 11.II. The second and third ventilation devices 11.1 and 11.II have, in addition to the ventilation passage openings 11.1, 11.2 to 11.n of the first ventilation device 11 arranged in a row, further ventilation passage openings, which are arranged offset to the ventilation passage openings 11.1 to 11.n of the first ventilation device 11.
    As shown in FIG. 5, an additional row of ventilation passage openings is formed in the two wall sections 8 and 5 above the thread treatment area 6. In addition, an additional row of ventilation passage openings can also be provided in the baffle wall section 9.
    FIG. 6 is a schematic sectional view according to section line C2-C2 from FIG. 5.
    The relative position of the diagonally and obliquely or vertically extending additional and ventilation passage openings of the ventilation devices 11, 11.1 and 11.II is indicated schematically in FIG.
    Fig. 7 shows a third embodiment of the interlacing device 100 according to the invention for at least two multifilament threads 2. For each multifilament thread 2 a separate thread treatment channel 6.1 and 6.2 is provided, which, as shown in FIG. 8, are axially symmetrical to one another.
    Each thread treatment channel 6.1 and 6.2 has associated wall sections 1, 5.1, 5.2, 8.1, 8.2 and 9.1 and 9.2, with a venting device 11 being provided in each of the wall sections 8.1, 8.2 and 9.1, 9.2, here in the form of vent passage openings 11.1 to 11.n.
    The thread treatment channels 6.1 and 6.2 are separated from one another by a ventilation gap 12, via which the ventilation passage openings 11.1 to 11.n, which face the ventilation gap 12, can discharge used working medium to the outside.
    Figures 8 and 9 show in corresponding sectional views according to section line E-E and F-F, the respective relative position of the ventilation openings 11.1 to 11.2, the nozzle openings 3.1 and 3.2, the ventilation gap 12 and the thread insertion gap 70.1 and 70.2.
    The ratio Q for the embodiment shown in Figures 5, 6 with a plurality of ventilation passage openings and for the embodiment shown in Figures 7 to 8 of the swirling device 100 with a plurality of thread treatment channels 6 and more than one nozzle passage openings 3 can be as follows according to the formula [4] can be calculated if the ventilation passage openings 11.1 to 11.n and the nozzle passage openings 3, 3.1 and 3.2 each have an essentially circular opening width DE, DW at the mouth to the thread treatment channel 6, the ratio [4] in the range of 1, 1 <Q <1.8, where[5] AEk = DE <2> × π and[6] ADk = DW <2> × π, whereDE is the opening width of the mouth opening of the ventilation inlet opening 110 into the thread treatment channel 6, 6.1, 6.2;DW is the opening width of the mouth opening of the nozzle passage opening 3 in the thread treatment channel 6;AEk is the cross-sectional area AE of the opening width DE of the n1-th vent inlet opening 110;ADk is the cross-sectional area AD of the opening width DW of the n2-th nozzle passage opening 3;n1 is the number of the vent inlet port 110; andn2 is the number of nozzle through holes 3.
    The area calculation of the opening widths De, DW is to be adapted to the respective shape of the nozzle passage opening 3, 3.1, 3.2 and the ventilation inlet opening 110, as it opens into the thread treatment channel 6. If, for example, the respective mouth shape in the thread treatment channel 6, 6.1, 6.2 of the nozzle passage opening 3,3.1,3.2 is elliptical, rectangular or square, then the area of the mouth cross-sectional opening width DW of the nozzle passage opening 3, 3.1, 3.2 and the mouth cross-sectional opening width DE of the ventilation passage opening 110 is mathematically calculate suitable math formula.
    In an embodiment not shown, the vent passage openings 11.1 to 11.n also have vent valves and / or vent flaps that allow the working medium 4 to be discharged only at a predetermined pressure or only working medium 4 can be discharged when the The ventilation flaps are in a ventilation flap open position and clear the ventilation openings 11.1 to 11.n.
    These exemplary embodiments, not shown, allow active regulation of the venting by either setting the venting valves to a predetermined pressure or opening and closing the venting flaps in predetermined time segments.
    The exemplary embodiments shown in the figures can also be combined with one another, so the multi-row ventilation passage openings can also be provided, for example, in the third exemplary embodiment of the swirl device.
    权利要求:
    Claims (10)
    [1]
    1. Swirling device for swirling a synthetic multifilament thread (2) by means of a pretensioned fluid working medium (4), comprising:a thread treatment channel (6) which is designed for passing through and swirling the multifilament thread (2), wherein the thread treatment channel (6) is defined by wall sections (8,9,1,3) which have a nozzle wall section (1) in which one Nozzle passage opening (3) is formed for supplying the prestressed fluid working medium (4), andhave a baffle wall section (5) on which the working medium (4) is distributed, characterized in that a venting device (11) is formed in a wall section (8,9,1,3) defining the thread treatment channel, via which the working medium (4 ) and / or air can be vented.
    [2]
    2. swirling device according to claim 1, characterized in that the venting device (11, 11.1, 11.11) is arranged essentially transversely, obliquely, parallel and / or perpendicular relative to the course of the nozzle passage opening (3) and laterally in the direction of extent of the thread treatment channel (6) is limited on both sides by a wall section.
    [3]
    3. swirling device according to at least one of claims 1 or 2, characterized in that the venting device (11, 11.1, 11.11) is arranged adjacent, bordering and / or at a predetermined distance from the nozzle passage opening (3).
    [4]
    4. swirling device according to one of the preceding claims, characterized in that the venting device (11, 11.1, 11.11) is formed in a wall section (8,9,1,3) of the thread treatment channel (6) opposite, in or to the side the wall section is formed which corresponds to the nozzle wall section (1) and / or the baffle wall section (5).
    [5]
    5. Swirling device according to one of the preceding claims, characterized in that the venting device (11, 11.1, 11.11) has a venting passage opening (11.1, 11.n) which has a venting inlet opening (110) and a venting outlet opening (111), the venting inlet opening (110) and the ventilation outlet opening (111) are arranged in relation to one another in such a way that the ventilation inlet opening (110) and the ventilation outlet opening (111) are concentric to one another, eccentrically to one another and / or laterally offset to one another.
    [6]
    6. swirling device according to claim 5, characterized in that the ventilation inlet opening (110) at the same level, above and / or below that of the nozzle passage opening (3, 3.1, 3.2) and / or at the same level, above and / or below a thread guide area ( 60) of the thread treatment channel (6) is arranged.
    [7]
    7. Swirling device according to at least one of the preceding claims 5 or 6, characterized in that the ventilation inlet opening (110) has a predetermined opening width (DE), the cross-sectional area (AE) of the opening width of the ventilation inlet opening (110) being greater than the cross-sectional area of the opening width (DW) of the nozzle passage opening (3).
    [8]
    8. swirling device according to one of the preceding claims 5 to 7, characterized in that the ventilation device (11, 11.1, 11.11) has a plurality of ventilation passage openings (11.1, 11.n) which are arranged linearly, wave-shaped and / or offset to one another, and each have the ventilation inlet opening (110) with a predetermined, constant or variable opening width (DE), and / or the total sum of the cross-sectional area (AE) of the opening width (DE) of the ventilation inlet opening (110) is greater than the sum of the cross-sectional area (AD ) is the opening width (DW) of the nozzle passage opening (3), where(1) the ratio is in the range 1.1 <Q <1.8, whereAEk = cross-sectional area (AE) of the opening width (DE) of the ventilation inlet opening (110) in the thread treatment channel;ADk = cross-sectional areas (AD) of the opening width (DW) of the nozzle through-opening in the thread treatment channel (3);n1 = number of the vent inlet opening (110); andn2 = number of nozzle openings (3).
    [9]
    9. swirling device according to one of the preceding claims, characterized in that the vent area (112) of the vent passage opening (11.1, 11.n) is arranged centrally, offset, on both sides, symmetrically and / or asymmetrically to the nozzle passage opening (3).
    [10]
    10. Swirling device according to one of the preceding claims, characterized in that the ventilation passage opening (11.1, 11.n) has a ventilation valve and / or a ventilation flap.
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102019001545.2A|DE102019001545A1|2019-03-05|2019-03-05|Swirling device for swirling a synthetic, multifilament thread|
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