EP3663446B1 - Vorrichtung zum verdichten eines faserbandes für eine spinnmaschine - Google Patents

Vorrichtung zum verdichten eines faserbandes für eine spinnmaschine Download PDF

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Publication number
EP3663446B1
EP3663446B1 EP19208231.1A EP19208231A EP3663446B1 EP 3663446 B1 EP3663446 B1 EP 3663446B1 EP 19208231 A EP19208231 A EP 19208231A EP 3663446 B1 EP3663446 B1 EP 3663446B1
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EP
European Patent Office
Prior art keywords
suction pipe
fiber bundle
guide
guide member
condensing device
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
EP19208231.1A
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English (en)
French (fr)
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EP3663446A1 (de
Inventor
Naoyuki MITSUTSUKA
Makoto Yakushi
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.)
Toyota Industries Corp
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Toyota Industries Corp
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 Toyota Industries Corp filed Critical Toyota Industries Corp
Publication of EP3663446A1 publication Critical patent/EP3663446A1/de
Application granted granted Critical
Publication of EP3663446B1 publication Critical patent/EP3663446B1/de
Active legal-status Critical Current
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons

Definitions

  • the present disclosure relates to a fiber bundle condensing device of a spinning machine.
  • a spinning machine such as a yarn twisting machine and a roving machine, generally includes a drafting device that stretches or drafts a fiber bundle which is a material of a yarn and a fiber bundle condensing device that condenses the fiber bundle drafted by the drafting device.
  • the fiber bundle condensing device of a spinning machine also includes a suction pipe which has a guide surface and an air-permeable apron which is mounted on the guide surface of the suction pipe in a surrounding manner.
  • a suction slit is formed in the guide surface of the suction pipe (see Japanese Patent Application Publication JP 2008 - 095 233 A , for example).
  • the air-permeable apron moves while being in contact with the guide surface of the suction pipe.
  • the guide surface of the suction pipe wears gradually due to the friction with the air-permeable apron.
  • the guide member When attaching a guide member to a suction pipe, as described above, the guide member needs to be fixed to the suction pipe in order to prevent the guide member from moving while the fiber bundle condensing device is operating.
  • the conventional fiber bundle condensing device uses a screw to fix the guide member to the suction pipe, or otherwise an adhesive agent is applied to the suction pipe to fix the guide member.
  • DE 100 36 786 A1 discloses a fiber bundle condensing device according to the preamble of claim 1.
  • such fixing means each have a problem as follows.
  • fixing the guide member to the suction pipe with a screw involves an increase in the number of parts or components used, leading to an increase in the cost. Furthermore, fixing with a screw complicates the structure of the fiber bundle condensing device, and such complicated structure may catch cotton fly easily.
  • the present invention has been made in view of the circumstances above, and is directed to providing a fiber bundle condensing device of a spinning machine that permits a guide member having a suction slit to be fixed to a suction pipe and also permits replacement of the guide member with ease.
  • FIG. 1 is a fragmentary side view showing a schematic configuration of a fiber bundle condensing device of a spinning machine according to the present embodiment.
  • a fiber bundle condensing device 11 is disposed downstream of a drafting device 10.
  • the drafting device 10 includes a delivery roller pair 12.
  • the delivery roller pair 12 includes a lower front roller 12a and an upper front roller 12b.
  • the upper front roller 12b is supported by a support member 19.
  • the fiber bundle condensing device 11 includes a delivery portion 13, a suction pipe 14, an air-permeable apron 15, and an apron guide 16.
  • the delivery portion 13 includes a lower nip roller 18a and an upper nip roller 18b.
  • the lower nip roller 18a rotates integrally with a rotational shaft 17.
  • a gear (not shown) is mounted to the rotational shaft 17.
  • the gear is engaged with an intermediate gear 20.
  • the intermediate gear 20 is engaged with a gear (not shown) that rotates integrally with the lower front roller 12a. With this configuration, the rotational force of the lower front roller 12a is transmitted to the lower nip roller 18a via the intermediate gear 20.
  • the upper nip roller 18b is pressed against the lower nip roller 18a via the air-permeable apron 15.
  • This pressing mechanism configures a nip portion 13a of the delivery portion 13.
  • the air-permeable apron 15 and a fiber bundle F are placed on the nip portion 13a of the delivery portion 13.
  • the upper nip roller 18b is supported by a pressing arm (not shown) via a support member 19 at every two spindle stations of the spinning machine.
  • the suction pipe 14 is disposed downstream of the drafting device 10. More specifically, the suction pipe 14 is disposed downstream of the delivery roller pair 12 of the drafting device 10 and upstream of the nip portion 13a of the delivery portion 13 in a direction X in which the fiber bundle F is moved (hereinafter, the moving direction X).
  • the suction pipe 14 is connected to a suction source (not shown) via a connection pipe 21.
  • the air-permeable apron 15 is an endless belt having no ends, and formed of a woven fabric, such as the one having an appropriate air permeability.
  • the air-permeable apron 15 is mounted in such a manner as to surround the suction pipe 14, the apron guide 16, and the lower nip roller 18a so that the air-permeable apron 15 passes through the nip portion 13a of the delivery portion 13.
  • the air-permeable apron 15 transfers the fiber bundle F in the X direction while moving with the rotation of the lower nip roller 18a.
  • a tip end 22a of the suction nozzle 22 is located below the apron guide 16.
  • the suction nozzle 22 is adapted to suck the fiber bundle F discharged from the drafting device 10 when a fiber break has occurred.
  • a distal end (not shown) of the suction nozzle 22 is connected to a single pneumatic duct (not shown) which is common to all of the spindle stations of the spinning machine.
  • FIG. 2 is a perspective view for illustrating the structure of the suction pipe 14 used in the fiber bundle condensing device 11 of FIG. 1 .
  • the suction pipe 14 is a hollow and elongated pipe.
  • the suction pipe 14 is disposed so as to extend in a direction crossing the moving direction X of the fiber bundle F.
  • the suction pipe 14 extends longitudinally and perpendicularly to the plane of the sheet of FIG. 1 .
  • the suction pipe 14 is made of aluminum and formed, for example, by extrusion molding.
  • the suction pipe 14 includes three outer surfaces, namely, outer surfaces 31, 32, and 33.
  • the outer surfaces will be referred to as the first outer surface 31, the second outer surface 32, and the third outer surface 33, respectively.
  • the first outer surface 31 is positioned so as to extend along the moving path of the fiber bundle F and formed in a curved shape protruding outward.
  • a plurality of suction holes 35 is formed in the first outer surface 31.
  • the suction holes 35 are arranged at predetermined intervals in the longitudinal direction of the suction pipe 14. The intervals correspond to the positions of the spindle stations.
  • Each suction hole 35 is formed in a slit shape extending in a direction crossing the longitudinal direction of the suction pipe 14.
  • the second outer surface 32 is formed continuously from a first side 31a of the first outer surface 31, having a curved shape protruding inward.
  • the third outer surface 33 is formed continuously from a second side 31b of the first outer surface 31, having a curved shape protruding inward.
  • the second outer surface 32 and the third outer surface 33 are connected to each other at their sides located away from the first outer surface 31.
  • a guide member 41 is attached to the suction pipe 14.
  • the guide member 41 is a thin-walled member made of a metal.
  • the guide member 41 is attached to the suction pipe 14 at a position corresponding to the mounting position of the air-permeable apron 15. It is to be noted that, in the present disclosure, a plurality of the guide members 41 are disposed at intervals along the longitudinal direction of the suction pipe 14. It is also to be noted, however, that only one of the guide members 41 is illustrated in FIG. 2 and description herein is made with reference to this representative guide member 14.
  • the guide members 41 are attached to the suction pipe 14 corresponding to the respective suction holes 35.
  • Each guide member 41 includes a guide surface 42 that is formed along the moving path of the fiber bundle F to guide the movement of the air-permeable apron 15.
  • the air-permeable apron 15 moves with the rotation of the lower nip roller 18a while being in contact with the guide surface 42 of the guide member 41.
  • the guide surface 42 is formed in a curved shape protruding outward, conforming to the first outer surface 31 of the suction pipe 14.
  • a suction slit 43 is formed in the guide surface 42 of the guide member 41.
  • the guide member 41 is attached to the suction pipe 14 so that the suction slit 43 is aligned with the suction hole 35 of the first outer surface 31 of the suction pipe 14. It is preferable that the suction hole 35 of the suction pipe 14 have the same shape and the same dimension as those of the suction slit 43. With the suction hole 35 thus formed before attaching the guide member 41 to the suction pipe 14, the guide member 41 may be attached to the suction pipe 14 easily and precisely by aligning the suction slit 43 with the suction hole 35. It is to be noted, however, that the shape and dimension of the suction hole 35 need not necessarily be the same as those of the suction slit 43.
  • the suction hole 35 may be a hole which is greater than the suction slit 43 and has a different shape from that of the suction slit 43.
  • FIG. 3 is a front view of the guide member 41
  • FIG. 4 is a cross-sectional view of the guide member 41 taken along line IV-IV of FIG. 3 .
  • the guide member 41 has a rectangular shape in a front view.
  • the guide member 41 has two bent portions, namely, bent portions 45 and 46, formed at opposite ends thereof.
  • the bent portion 45 is referred to as the first bent portion 45 and the bent portion 46 as the second bent portion 46.
  • the first bent portion 45 is formed by bending a portion of the guide member 41 near one end of the suction slit 43 in the longitudinal direction thereof so as to bend from the first side 42a of the guide surface 42.
  • the second bent portion 46 is formed by bending another portion of the guide member 41 near the other end of the suction slit 43 in the longitudinal direction thereof so as to bend from the second side 42b of the guide surface 42.
  • the first bent portion 45 is bent conforming to the curved shape of the boundary between the first outer surface 31 and the second outer surface 32 of the suction pipe 14.
  • the second bent portion 46 is bent conforming to the curved shape of the boundary between the first outer surface 31 and the third outer surface 33 of the suction pipe 14.
  • FIG. 5 is a side view of the suction pipe 14 to which the guide member is attached
  • FIG. 6 shows the suction pipe 14 as viewed in the direction of VI of FIG. 5 .
  • the guide member 41 is attached to the suction pipe 14 such that the guide surface 42 of the guide member 41 overlaps with the first outer surface 31 of the suction pipe 14.
  • the first bent portion 45 of the guide member 41 is disposed so as to overlap with the second outer surface 32 of the suction pipe 14.
  • the second bent portion 46 is disposed so as to overlap with the third outer surface 33 of the suction pipe 14. In this way, the first bent portion 45 is hooked onto the second outer surface 32, and the second bent portion 46 is hooked onto the third outer surface 33.
  • the guide member 41 is fixed to the suction pipe 14 with a fixation tape 51.
  • the fixation tape 51 is an adhesive tape having an adhesive layer on one side of the substrate of the tape.
  • Examples of the fixation tape 51 may include a resin tape including a resin substrate, a paper tape including a paper substrate, and a metallic tape including a metallic substrate.
  • the fixation tape 51 should preferably be a resin tape.
  • the fixation tape 51 should preferably be a metallic tape.
  • the fixation tape 51 is attached to the second outer surface 32 and the third outer surface 33 of the suction pipe 14.
  • the fixation tape 51 includes a first portion 51a and a second portion 51b.
  • the first portion 51a overlaps with the first bent portion 45 of the guide member 41 on the second outer surface 32 of the suction pipe 14
  • the second portion 51b overlaps with the second bent portion 46 of the guide member 41 on the third outer surface 33 of the suction pipe 14.
  • the guide member 41 is fixed to the suction pipe 14 of the fiber bundle condensing device 11 with the fixation tape 51.
  • the guide member 41 may be detached from the suction pipe 14 by removing the fixation tape 51 attached to the second outer surface 32 and the third outer surface 33 of the suction pipe 14, in order to replace the guide member 41.
  • the guide surface 42 of the guide member 41 is disposed on the first outer surface 31 of the suction pipe 14 in an overlapping manner.
  • the first bent portion 45 is hooked onto the second outer surface 32 of the suction pipe 14 and the second bent portion 46 is hooked onto the third outer surface 33 of the suction pipe 14.
  • the position of the suction hole 35 of the suction pipe 14 and the position of the suction slit 43 of the guide member 41 are aligned.
  • the fixation tape 51 is attached to the second outer surface 32 and the third outer surface 33 of the suction pipe 14.
  • fixation tape 51 is attached such that the first portion 51a overlaps with the first bent portion 45 of the guide member 41 and the second portion 51b overlaps with the second bent portion 46 of the guide member 41. In this way the suction pipe 14 may be fixed to the guide member 41.
  • the guide member 41 which has the guide surface 42 provided with the suction slit 43 is fixed to the suction pipe 14 with the fixation tape 51.
  • the guide member 41 may be detached from the suction pipe 14 easily by removing the fixation tape 51 from the suction pipe 14, and the guide member 41 may be attached to the suction pipe 14 easily by attaching the fixation tape 51 to the suction pipe 14. Accordingly, the guide member 41 may be replaced easily. Furthermore, since no fasteners such as screws are used to fix the guide member 41, an increase in the number of parts and components resulting from the use of such fasteners and hence catching of cotton fly may be prevented. Furthermore, since there is no need of applying an adhesive agent to fix the guide member 41, the work of removing such an adhesive agent is eliminated.
  • a single strip or sheet of the fixation tape 51 is used to fix a single guide member 41.
  • two guide members 41 that are adjacent to each other in the longitudinal direction of the suction pipe 14 may be fixed with a single strip or sheet of the fixation tape 51.
  • three or more guide members 41 (not shown) that are adjacent in the longitudinal direction of the suction pipe 14 may be fixed with a single strip or sheet of the fixation tape 51.
  • one strip or sheet of the fixation tape 51 may be used for the adjacent first bent portions 45, and another strip or sheet of the fixation tape 51 may be used for the adjacent second bent portions 46.

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

Claims (4)

  1. Faserbündelverdichtungsvorrichtung (11) für eine Spinnmaschine, mit:
    einem Saugrohr (14), das geeignet ist, nachgelagert von einem Lieferwalzenpaar (12) eines Streckwerks (10) angeordnet zu sein;
    einem Förderabschnitt (13), der eine untere Klemmwalze (18a) und eine obere Klemmwalze (18b) aufweist, und
    einem luftdurchlässigen Riemen (15), der an dem Saugrohr (14) auf eine solche Weise montiert ist, um das Saugrohr (14), eine Riemenführung (16) und die untere Klemmwalze (18a) zu umgeben, wobei die Faserbündelverdichtungsvorrichtung (11) geeignet ist, ein von dem Streckwerk (10) gestrecktes Faserbündel (F) zu verdichten, dadurch gekennzeichnet, dass
    die Faserbündelverdichtungsvorrichtung (11) Folgendes aufweist:
    ein Führungselement (41), das an dem Saugrohr (14) bei einer Position angebracht ist, die einer Montageposition des luftdurchlässigen Riemens (15) entspricht, und eine Führungsfläche (42), die angepasst ist, eine Bewegung des luftdurchlässigen Riemens (15) zu führen, und einen in der Führungsfläche (42) ausgebildeten Saugschlitz (43) aufweist; und
    ein Befestigungsband (51), um das Führungselement (41) an dem Saugrohr (14) zu fixieren, wobei
    das Saugrohr (14) Folgendes aufweist:
    eine erste Außenfläche (31), die positioniert ist, um sich entlang eines Bewegungspfads des Faserbündels (F) zu erstrecken;
    eine zweite Außenfläche (32), die kontinuierlich von einer ersten Seite (31a) der ersten Außenfläche (31) ausgebildet ist und einer unteren vorderen Walze (12a) des Förderwalzenpaars (12) zugewandt ist; und
    eine dritte Außenfläche (33), die kontinuierlich von einer zweiten Seite (31b) der ersten Außenfläche (31) ausgebildet ist und der unteren Klemmwalze (18a) zugewandt ist,
    wobei das Führungselement (41) Folgendes aufweist:
    einen ersten Biegungsabschnitt (45), der von der Führungsfläche (42) in der Nähe eines Endes des Saugschlitzes (43) in der Längsrichtung des Saugschlitzes (43) gebogen ist; und
    einen zweiten Biegungsabschnitt (46), der von der Führungsfläche (42) in der Nähe des anderen Endes des Saugschlitzes (43) in der Längsrichtung davon gebogen ist,
    der erste Biegungsabschnitt (45) an der zweiten Außenfläche (32) angeordnet ist und der zweite Biegungsabschnitt (46) an der dritten Außenfläche (33) angeordnet ist und
    ein einzelnes Blatt des Befestigungsbands (51) verwendet wird, um das Führungselement (41) zu fixieren, und an der zweiten Außenfläche (32) und der dritten Außenfläche (33) des Saugrohrs (14) so befestigt ist, dass ein Abschnitt des einzelnen Blatts des Befestigungsbands (51) den ersten Biegungsabschnitt (51a) überlappt und ein anderer Abschnitt des einzelnen Blatts des Befestigungsbands (51) den zweiten Biegungsabschnitt (46) überlappt.
  2. Faserbündelverdichtungsvorrichtung (11) für die Spinnmaschine nach Anspruch 1, dadurch gekennzeichnet, dass
    die Faserbündelverdichtungsvorrichtung (11) eine Vielzahl von Führungselementen (41) aufweist und die Führungselemente (41) bei Intervallen entlang der Längsrichtung des Saugrohrs (14) angeordnet sind und
    mindestens zwei der Führungselemente (41), die in der Längsrichtung des Saugrohrs (14) zueinander benachbart sind, mit einem einzelnen Blatt des Befestigungsbands (51) fixiert sind.
  3. Faserbündelverdichtungsvorrichtung (11) für die Spinnmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Befestigungsband (51) ein Harzband ist.
  4. Faserbündelverdichtungsvorrichtung (11) für die Spinnmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Befestigungsband (51) ein Metallband ist.
EP19208231.1A 2018-12-04 2019-11-11 Vorrichtung zum verdichten eines faserbandes für eine spinnmaschine Active EP3663446B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018227228A JP7180333B2 (ja) 2018-12-04 2018-12-04 紡機の繊維束集束装置

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EP3663446A1 EP3663446A1 (de) 2020-06-10
EP3663446B1 true EP3663446B1 (de) 2024-06-12

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BE1019331A5 (nl) 2010-05-10 2012-06-05 Flooring Ind Ltd Sarl Vloerpaneel en werkwijzen voor het vervaardigen van vloerpanelen.
JP7468394B2 (ja) 2021-02-17 2024-04-16 株式会社豊田自動織機 紡機の繊維束集束装置

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JP2020090734A (ja) 2020-06-11
CN111270360B (zh) 2022-05-17
JP7180333B2 (ja) 2022-11-30
EP3663446A1 (de) 2020-06-10
CN111270360A (zh) 2020-06-12

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