JP6558194B2 - Suction duct in spinning machine - Google Patents

Suction duct in spinning machine Download PDF

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JP6558194B2
JP6558194B2 JP2015196885A JP2015196885A JP6558194B2 JP 6558194 B2 JP6558194 B2 JP 6558194B2 JP 2015196885 A JP2015196885 A JP 2015196885A JP 2015196885 A JP2015196885 A JP 2015196885A JP 6558194 B2 JP6558194 B2 JP 6558194B2
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duct
forming body
duct forming
peripheral surface
end portion
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JP2017066572A (en
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河合　泰之
泰之 河合
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Toyota Industries Corp
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Toyota Industries Corp
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Priority to CH01259/16A priority patent/CH711539B1/en
Priority to CN201610855462.0A priority patent/CN106811841B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/10—Sleeveless joints between two pipes, one being introduced into the other
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H11/00—Arrangements for confining or removing dust, fly or the like
    • D01H11/005—Arrangements for confining or removing dust, fly or the like with blowing and/or suction devices
    • 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

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

Description

本発明は、紡機における吸引ダクトに関する。   The present invention relates to a suction duct in a spinning machine.

紡機においては、ドラフト装置から送られてくる繊維束が糸切れすると、繊維束がフロントボトムローラ等に巻き付いたりして、その後の糸継ぎ作業に支障をきたすことがある。よって、紡機には、糸切れした繊維束をエアによって吸引除去するニューマクリアラ装置（以下、「ニューマ装置」と記載する）が配備されている（例えば特許文献１）。ニューマ装置は、機台長手方向に延設されたニューマダクト（吸引ダクト）を備えている。ニューマダクトには、フロントボトムローラに向けて延びる吸引パイプが設けられている。   In a spinning machine, when a fiber bundle sent from a draft device breaks, the fiber bundle may be wound around a front bottom roller or the like, which may hinder subsequent splicing operations. Therefore, the spinning machine is provided with a pneumatic clearer device (hereinafter referred to as “pneumatic device”) that sucks and removes the fiber bundle that has been broken by air (for example, Patent Document 1). The pneumatic device includes a pneumatic duct (suction duct) extending in the longitudinal direction of the machine base. The pneumatic duct is provided with a suction pipe extending toward the front bottom roller.

ニューマダクトは、筒状のダクト形成体を複数有している。ダクト形成体同士は、一方のダクト形成体の長手方向の一端部の内側に他方のダクト形成体の長手方向の他端部を嵌め込むことで連結されている。ニューマダクト内には、負圧源から負圧が作用しており、糸切れした繊維束は、吸引パイプに発生するエアの吸引流により吸引除去される。   The pneumatic duct has a plurality of cylindrical duct forming bodies. The duct forming bodies are connected to each other by fitting the other end portion in the longitudinal direction of the other duct forming body inside the one end portion in the longitudinal direction of one duct forming body. In the pneumatic duct, a negative pressure is applied from a negative pressure source, and the broken fiber bundle is sucked and removed by a suction flow of air generated in the suction pipe.

また、ドラフトされた繊維束を撚り掛けの前に予め集束し、毛羽の低減等の糸品質の向上を目的とした繊維束集束装置が従来から知られている（例えば特許文献２）。繊維束集束装置は、複数錘に対応する所定長さに形成された吸引パイプを備えている。吸引パイプにおける繊維束が通過する位置には、吸引孔が設けられている。吸引パイプは、複数の接続管を介して筒状の吸引ダクトに接続されている。吸引ダクトは、複数錘に対応する所定長さに形成されている。繊維束集束装置の吸引ダクトも、上述したニューマ装置のニューマダクトと同様に、筒状のダクト形成体を複数有し、ダクト形成体同士は、一方のダクト形成体の長手方向の一端部の内側に他方のダクト形成体の長手方向の他端部を嵌め込むことで連結されている。吸引ダクト内には、負圧源から負圧が作用しており、繊維束集束装置を通過する繊維束は、吸引パイプの吸引孔に発生するエアの吸引流により集束される。   In addition, a fiber bundle concentrating device that focuses a drafted fiber bundle in advance before twisting and improves yarn quality such as reducing fluff has been conventionally known (for example, Patent Document 2). The fiber bundle focusing device includes a suction pipe formed to have a predetermined length corresponding to a plurality of spindles. A suction hole is provided at a position where the fiber bundle passes through the suction pipe. The suction pipe is connected to a cylindrical suction duct via a plurality of connection pipes. The suction duct is formed in a predetermined length corresponding to a plurality of weights. The suction duct of the fiber bundle concentrating device also has a plurality of cylindrical duct forming bodies, like the above-described pneumatic duct of the pneumatic apparatus, and the duct forming bodies are inside the one end in the longitudinal direction of one duct forming body. Are connected by fitting the other end of the other duct forming body in the longitudinal direction. In the suction duct, a negative pressure is applied from a negative pressure source, and the fiber bundle passing through the fiber bundle focusing device is focused by the suction flow of air generated in the suction hole of the suction pipe.

特開平１１−１２８６２号公報Japanese Patent Laid-Open No. 11-12862 特開２００５−１７１４７６号公報JP 2005-171476 A

このような、紡機における吸引ダクトにおいては、一方のダクト形成体の一端部の内側に他方のダクト形成体の他端部を嵌め込むことで、ダクト形成体同士を連結しているため、一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間には隙間が生じる。よって、この隙間を介して内部へエアが流入してしまう虞がある。   In such a suction duct in a spinning machine, the duct forming bodies are connected to each other by fitting the other end of the other duct forming body inside the one end of one duct forming body. A gap is formed between the inner peripheral surface of one end of the duct former and the outer peripheral surface of the other end of the other duct former. Therefore, air may flow into the inside through this gap.

また、ダクト形成体が、吸引ダクト内に作用する負圧によって引き寄せられて、ダクト形成体同士の長手方向の相対位置が、予め定められた所定の相対位置からずれてしまう虞がある。ダクト形成体同士の長手方向の相対位置を位置決めするために、ダクト形成体同士の連結部分を接着することが考えられるが、ダクト形成体同士の連結部分を接着すると、ダクト形成体同士を分解する必要が生じた場合に、容易に分解することができなくなってしまう。   Further, the duct forming bodies are attracted by the negative pressure acting in the suction duct, so that the relative positions in the longitudinal direction of the duct forming bodies may deviate from a predetermined relative position. In order to position the relative positions in the longitudinal direction of the duct forming bodies, it is conceivable to bond the connecting portions of the duct forming bodies. However, if the connecting portions of the duct forming bodies are bonded, the duct forming bodies are disassembled. If necessary, it cannot be easily disassembled.

本発明の目的は、一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間の隙間を介した内部へのエアの流入を抑制しつつも、ダクト形成体同士の連結部分を接着すること無く、ダクト形成体同士の長手方向の相対位置を位置決めすることができる紡機における吸引ダクトを提供することにある。   The object of the present invention is to suppress the inflow of air to the inside through a gap between the inner peripheral surface of one end of one duct former and the outer peripheral surface of the other end of the other duct former. An object of the present invention is to provide a suction duct in a spinning machine that can position the relative positions in the longitudinal direction of duct forming bodies without bonding the connecting portions of the duct forming bodies.

上記課題を解決する紡機における吸引ダクトは、筒状のダクト形成体を複数有し、前記ダクト形成体同士は、一方のダクト形成体の長手方向の一端部の内側に他方のダクト形成体の長手方向の他端部を嵌め込むことで連結されており、内部に負圧が作用している紡機における吸引ダクトであって、前記負圧によるエアの吸引流の方向は、前記ダクト形成体の一端部から他端部に向かっており、前記一方のダクト形成体の一端部の内周面と前記他方のダクト形成体の他端部の外周面との間に挿入されるとともに前記エアの吸引流の方向に向かうにつれて先細になる挿入テーパ部を有する環状の弾性シール部材を備えた。   The suction duct in the spinning machine that solves the above-described problem has a plurality of cylindrical duct forming bodies, and the duct forming bodies are arranged in the longitudinal direction of the other duct forming body inside one end portion in the longitudinal direction of one duct forming body. The suction duct in the spinning machine is connected by fitting the other end of the direction, and a negative pressure is acting on the inside, and the direction of the air suction flow by the negative pressure is one end of the duct forming body And is inserted between the inner peripheral surface of one end portion of the one duct forming body and the outer peripheral surface of the other end portion of the other duct forming body, and the air suction flow An annular elastic seal member having an insertion taper portion that tapers in the direction of is provided.

これによれば、一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間に挿入テーパ部が挿入されることにより、一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間が挿入テーパ部によってシールされる。また、負圧によるエアの吸引流の方向は、ダクト形成体の一端部から他端部に向かっているため、エアの吸引流による吸引作用によって、一方のダクト形成体に対して他方のダクト形成体が引き込まれようとする。このとき、挿入テーパ部が一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間に喰い込むことで生じる楔効果により、一方のダクト形成体に対して他方のダクト形成体がそれ以上引き込まれなくなり、ダクト形成体同士の長手方向の相対位置が位置決めされる。したがって、一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間の隙間を介した内部へのエアの流入を抑制しつつも、ダクト形成体同士の連結部分を接着すること無く、ダクト形成体同士の長手方向の相対位置を位置決めすることができる。   According to this, the insertion taper portion is inserted between the inner peripheral surface of one end of one duct forming body and the outer peripheral surface of the other end of the other duct forming body, thereby The insertion taper part seals between the inner peripheral surface of one end and the outer peripheral surface of the other end of the other duct forming body. Also, since the direction of the air suction flow due to the negative pressure is from one end of the duct forming body to the other end, the other duct formation is formed with respect to one duct forming body due to the suction action by the air suction flow. The body tries to be drawn. At this time, due to the wedge effect that occurs when the insertion taper portion bites between the inner peripheral surface of one end of one duct forming member and the outer peripheral surface of the other end of the other duct forming member, one duct forming member On the other hand, the other duct forming body is not drawn any more, and the relative positions in the longitudinal direction of the duct forming bodies are positioned. Therefore, while suppressing the inflow of air into the inside through the gap between the inner peripheral surface of one end of one duct forming member and the outer peripheral surface of the other end of the other duct forming member, the duct forming member The relative positions in the longitudinal direction of the duct forming bodies can be positioned without adhering the connecting portions between them.

上記紡機における吸引ダクトにおいて、前記ダクト形成体の一端部の内周面は、前記一端部の開口に向かうにつれて末広がりとなる開口テーパ部を有し、前記挿入テーパ部が前記一方のダクト形成体の一端部の内周面と前記他方のダクト形成体の他端部の外周面との間に挿入される前の自然状態である前記挿入テーパ部のテーパ角度は、前記開口テーパ部のテーパ角度よりも大きいことが好ましい。   In the suction duct in the spinning machine, an inner peripheral surface of one end portion of the duct forming body has an opening taper portion that widens toward the opening of the one end portion, and the insertion taper portion is formed on the one duct forming body. The taper angle of the insertion taper portion in a natural state before being inserted between the inner peripheral surface of the one end portion and the outer peripheral surface of the other end portion of the other duct forming body is greater than the taper angle of the opening taper portion. Is also preferably large.

ダクト形成体の一端部の内周面には、一端部の開口に向かうにつれて末広がりとなる開口テーパ部が形成されている場合がある。この場合であっても、挿入テーパ部を一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間に挿入したときに、挿入テーパ部を一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間に喰い込ませることができる。   There may be a case where an opening taper portion is formed on the inner peripheral surface of the one end portion of the duct forming body so as to expand toward the opening of the one end portion. Even in this case, when the insertion taper is inserted between the inner peripheral surface of one end of one duct forming body and the outer peripheral surface of the other end of the other duct forming body, It can be made to bite between the internal peripheral surface of the one end part of this duct formation body, and the outer peripheral surface of the other end part of the other duct formation body.

上記紡機における吸引ダクトにおいて、前記弾性シール部材は、前記挿入テーパ部に連続するとともに前記挿入テーパ部よりも厚みのある剛性補強部を有していることが好ましい。   In the suction duct in the spinning machine, it is preferable that the elastic seal member has a rigid reinforcing portion that is continuous with the insertion taper portion and is thicker than the insertion taper portion.

例えば、弾性シール部材における挿入テーパ部に連続する部位の厚みが、挿入テーパ部よりも薄い場合を考える。この場合、弾性シール部材における挿入テーパ部に連続する部位を押し込んで、挿入テーパ部を一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間に挿入しようとしても、弾性シール部材における挿入テーパ部に連続する部位が撓み易い。よって、一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間に挿入テーパ部を挿入し難い。そこで、弾性シール部材が剛性補強部を有することで、挿入テーパ部を一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間に挿入する際に、剛性補強部を押し込んでも、剛性補強部が撓み難い。よって、一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間に挿入テーパ部を挿入し易くすることができる。   For example, consider a case where the thickness of a portion continuous with the insertion taper portion in the elastic seal member is thinner than the insertion taper portion. In this case, a portion continuous with the insertion taper portion of the elastic seal member is pushed in, and the insertion taper portion is placed between the inner peripheral surface of one end of one duct forming body and the outer peripheral surface of the other end of the other duct forming body. Even if it tries to insert in, the site | part which continues to the insertion taper part in an elastic seal member tends to bend. Therefore, it is difficult to insert the insertion taper portion between the inner peripheral surface of one end of one duct forming body and the outer peripheral surface of the other end of the other duct forming body. Therefore, when the elastic seal member has the rigidity reinforcing portion, the insertion taper portion is inserted between the inner peripheral surface of one end of one duct forming body and the outer peripheral surface of the other end of the other duct forming body. Even if the rigid reinforcing portion is pushed in, the rigid reinforcing portion is difficult to bend. Therefore, it is possible to easily insert the insertion taper portion between the inner peripheral surface of one end of one duct forming body and the outer peripheral surface of the other end of the other duct forming body.

上記紡機における吸引ダクトにおいて、前記弾性シール部材は、前記挿入テーパ部と前記剛性補強部との間に段差部を有していることが好ましい。
これによれば、弾性シール部材にエアの吸引流による吸引作用が作用して、弾性シール部材が引き込まれたとしても、段差部が、一方のダクト形成体の一端部の開口端縁に当接するため、弾性シール部材がそれ以上引き込まれなくなる。よって、ダクト形成体同士の長手方向の相対位置がずれてしまうことを回避することができる。 In the suction duct in the spinning machine, it is preferable that the elastic seal member has a step portion between the insertion taper portion and the rigid reinforcement portion.
According to this, even if the elastic sealing member is pulled by the suction action of the air suction flow, the stepped portion comes into contact with the opening edge of the one end portion of the one duct forming body. For this reason, the elastic seal member is not drawn any further. Therefore, it can avoid that the relative position of the longitudinal direction of duct formation bodies shift | deviates.

上記紡機における吸引ダクトにおいて、前記弾性シール部材における前記ダクト形成体と密着する面に複数の環状溝を設けたことが好ましい。
これによれば、複数の環状溝がラビリンスシールとして機能するため、一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間の隙間を介した内部へのエアの流入をさらに抑制し易くすることができる。 In the suction duct in the spinning machine, it is preferable that a plurality of annular grooves are provided on a surface of the elastic seal member that is in close contact with the duct forming body.
According to this, since the plurality of annular grooves function as a labyrinth seal, the gap between the inner peripheral surface of one end of one duct forming body and the outer peripheral surface of the other end of the other duct forming body is interposed. It is possible to further suppress the inflow of air to the inside.

この発明によれば、一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間の隙間を介した内部へのエアの流入を抑制しつつも、ダクト形成体同士の連結部分を接着すること無く、ダクト形成体同士の長手方向の相対位置を位置決めすることができる。   According to this invention, while suppressing the inflow of air to the inside through the gap between the inner peripheral surface of one end of one duct forming body and the outer peripheral surface of the other end of the other duct forming body. The relative positions in the longitudinal direction of the duct forming bodies can be positioned without adhering the connecting portions of the duct forming bodies.

（ａ）は実施形態における繊維束集束装置の一部を示す模式図、（ｂ）は吸引パイプの部分斜視図。(A) is a schematic diagram which shows a part of fiber bundle focusing apparatus in embodiment, (b) is a partial perspective view of a suction pipe. 繊維束集束装置を模式的に示す斜視図。The perspective view which shows a fiber bundle focusing apparatus typically. ダクト形成体同士の連結部分を示す断面図。Sectional drawing which shows the connection part of duct formation bodies. （ａ）は弾性シール部材の断面図、（ｂ）はダクト形成体の一端部を示す断面図。(A) is sectional drawing of an elastic sealing member, (b) is sectional drawing which shows the one end part of a duct formation body. 別の実施形態におけるダクト形成体同士の連結部分を拡大して示す断面図。Sectional drawing which expands and shows the connection part of the duct formation bodies in another embodiment. 別の実施形態におけるダクト形成体同士の連結部分を拡大して示す断面図。Sectional drawing which expands and shows the connection part of the duct formation bodies in another embodiment.

以下、紡機における吸引ダクトを繊維束集束装置の吸引ダクトに具体化した一実施形態を図１〜図４にしたがって説明する。
図１（ａ）に示すように、繊維束集束装置１０は、ドラフト装置１１の最終送出ローラ対１２よりも繊維束Ｆの流れ方向の下流側に設けられている。繊維束集束装置１０は、送出部１３、吸引パイプ１４、通気搬送ベルト１５及びガイド部１６を備えている。送出部１３は、最終送出ローラ対１２のフロントボトムローラ１２ａと平行に配設されたボトムニップローラ１３ａと、ボトムニップローラ１３ａに通気搬送ベルト１５を介して押圧されるトップニップローラ１３ｂとで構成されている。トップニップローラ１３ｂは、最終送出ローラ対１２のフロントトップローラ１２ｂと同様に２錘毎に、支持部材１７を介してウエイティングアーム（図示せず）に支持されている。 Hereinafter, an embodiment in which a suction duct in a spinning machine is embodied as a suction duct of a fiber bundle focusing device will be described with reference to FIGS.
As shown in FIG. 1A, the fiber bundle concentrating device 10 is provided on the downstream side in the flow direction of the fiber bundle F with respect to the final delivery roller pair 12 of the draft device 11. The fiber bundle concentrating device 10 includes a delivery unit 13, a suction pipe 14, a ventilation conveyance belt 15, and a guide unit 16. The delivery unit 13 includes a bottom nip roller 13 a disposed in parallel with the front bottom roller 12 a of the final delivery roller pair 12, and a top nip roller 13 b that is pressed against the bottom nip roller 13 a via the ventilation conveyance belt 15. . Similarly to the front top roller 12b of the final delivery roller pair 12, the top nip roller 13b is supported by a weighting arm (not shown) via a support member 17 every two spindles.

吸引パイプ１４は、ボトムニップローラ１３ａとトップニップローラ１３ｂとによるニップ点に対して繊維束Ｆの流れ方向の上流側に設けられている。通気搬送ベルト１５は、例えば、適度な通気性を確保できる織布により形成されている。通気搬送ベルト１５は、吸引パイプ１４、ガイド部１６及びボトムニップローラ１３ａに巻き掛けられた状態で回転されて繊維束Ｆを搬送する。   The suction pipe 14 is provided on the upstream side in the flow direction of the fiber bundle F with respect to the nip point formed by the bottom nip roller 13a and the top nip roller 13b. The ventilation conveyance belt 15 is formed of, for example, a woven fabric that can ensure appropriate ventilation. The ventilation conveyance belt 15 is rotated while being wound around the suction pipe 14, the guide portion 16, and the bottom nip roller 13a, and conveys the fiber bundle F.

吸引パイプ１４、ガイド部１６及びボトムニップローラ１３ａは、複数錘（例えば、８錘）と対応する所定長さに形成されている。また、ガイド部１６の下方近傍には、糸切れ時にドラフト装置１１から送出される繊維束Ｆを吸引する作用をなすシングルタイプのニューマ装置の吸引ノズル１８の先端がそれぞれ配設されている。吸引ノズル１８の基端は、機台長手方向に延設された全錘共通のニューマダクト（図示せず）に接続されている。   The suction pipe 14, the guide part 16, and the bottom nip roller 13a are formed in a predetermined length corresponding to a plurality of weights (for example, eight weights). Further, near the lower portion of the guide portion 16, the tip of a suction nozzle 18 of a single type pneumatic device that serves to suck the fiber bundle F fed from the draft device 11 when the yarn breaks is disposed. The proximal end of the suction nozzle 18 is connected to a pneumatic duct (not shown) that is common to all the spindles and extends in the longitudinal direction of the machine base.

図１（ｂ）に示すように、吸引パイプ１４は、外側に凸となるように湾曲形成された案内面１４ａを有し、案内面１４ａには吸引パイプ１４の長手方向と交差する方向に延びる吸引孔１４ｈが吸引パイプ１４の長手方向において所定ピッチ（紡機の錘ピッチ）で複数形成されている。吸引パイプ１４は、案内面１４ａが繊維束Ｆの通過経路と対応する状態で繊維束集束装置１０に組み付けられ、通気搬送ベルト１５の一部が案内面１４ａに巻き掛けられている。   As shown in FIG. 1B, the suction pipe 14 has a guide surface 14a that is curved so as to protrude outward, and the guide surface 14a extends in a direction intersecting the longitudinal direction of the suction pipe 14. A plurality of suction holes 14 h are formed at a predetermined pitch (spindle weight pitch) in the longitudinal direction of the suction pipe 14. The suction pipe 14 is assembled to the fiber bundle focusing device 10 in a state where the guide surface 14a corresponds to the passage path of the fiber bundle F, and a part of the ventilation conveyance belt 15 is wound around the guide surface 14a.

図２に示すように、繊維束集束装置１０は、機台長手方向に延設された中継ダクト１９を複数備えている。複数の中継ダクト１９は、機台長手方向に並設されている。複数の中継ダクト１９における機台長手方向に対して直交する両側には、複数の吸引パイプ１４が機台長手方向に並設されている。各吸引パイプ１４は、２つの接続管２０を介して中継ダクト１９に接続されている。各中継ダクト１９は、片側２４錘、両側４８錘に対応する長さに形成されている。したがって、各中継ダクト１９における機台長手方向に対して直交する両側には、吸引パイプ１４が３つずつ配置されている。   As shown in FIG. 2, the fiber bundle concentrating device 10 includes a plurality of relay ducts 19 extending in the longitudinal direction of the machine base. The plurality of relay ducts 19 are juxtaposed in the longitudinal direction of the machine base. A plurality of suction pipes 14 are juxtaposed in the machine longitudinal direction on both sides of the relay ducts 19 perpendicular to the machine longitudinal direction. Each suction pipe 14 is connected to the relay duct 19 via two connection pipes 20. Each relay duct 19 has a length corresponding to 24 spindles on one side and 48 spindles on both sides. Accordingly, three suction pipes 14 are arranged on both sides of each relay duct 19 perpendicular to the longitudinal direction of the machine base.

また、繊維束集束装置１０は、機台長手方向に延設された円筒状の吸引ダクト３０を備えている。吸引ダクト３０は、樹脂製である円筒状のダクト形成体３１を複数有する。複数のダクト形成体３１同士は互いに連結されている。各ダクト形成体３１は、各中継ダクト１９に対応する長さに形成されている。各ダクト形成体３１と各中継ダクト１９とは２つの接続管２１を介して接続されている。吸引ダクト３０の端部には、負圧源２２が連結されている。負圧源２２としては、例えばファンをモータで駆動するファンモータが使用されている。そして、負圧源２２により、吸引ダクト３０の内部に負圧が作用している。負圧によるエアの吸引流の方向（図２において矢印Ｘ１で示す方向）は、ダクト形成体３１の長手方向の一端部３２から他端部３３に向かっている。   Further, the fiber bundle focusing device 10 includes a cylindrical suction duct 30 extending in the machine table longitudinal direction. The suction duct 30 has a plurality of cylindrical duct forming bodies 31 made of resin. The plurality of duct forming bodies 31 are connected to each other. Each duct forming body 31 is formed in a length corresponding to each relay duct 19. Each duct forming body 31 and each relay duct 19 are connected via two connecting pipes 21. A negative pressure source 22 is connected to the end of the suction duct 30. As the negative pressure source 22, for example, a fan motor that drives a fan with a motor is used. A negative pressure is applied to the inside of the suction duct 30 by the negative pressure source 22. The direction of the air suction flow by the negative pressure (the direction indicated by the arrow X1 in FIG.

紡機が運転されると、繊維束Ｆはドラフト装置１１でドラフトされた後、最終送出ローラ対１２から繊維束集束装置１０へ案内される。ボトムニップローラ１３ａ及びトップニップローラ１３ｂは最終送出ローラ対１２の表面速度と略同等の速度で回転され、繊維束Ｆは適度な緊張状態でボトムニップローラ１３ａ及びトップニップローラ１３ｂのニップ点（送り出しニップ点）を過ぎた後、転向して撚り掛けを受けながら下流側へ移動する。   When the spinning machine is operated, the fiber bundle F is drafted by the draft device 11 and then guided from the final delivery roller pair 12 to the fiber bundle focusing device 10. The bottom nip roller 13a and the top nip roller 13b are rotated at a speed substantially equal to the surface speed of the final delivery roller pair 12, and the fiber bundle F sets the nip point (feed nip point) between the bottom nip roller 13a and the top nip roller 13b in an appropriate tension state. After passing, it turns and moves downstream while being twisted.

また、吸引ダクト３０の内部に作用する負圧によって生じる吸引作用が、接続管２１、中継ダクト１９、接続管２０を介して吸引パイプ１４に及んで、吸引孔１４ｈに発生するエアの吸引流が通気搬送ベルト１５を介して繊維束Ｆに作用する。そして、繊維束Ｆが吸引孔１４ｈと対応する位置に吸引集束された状態で移動する。したがって、繊維束集束装置１０が設けられていない紡機に比較して、毛羽の発生が抑制されて糸質が改善される。   Further, the suction action caused by the negative pressure acting on the inside of the suction duct 30 reaches the suction pipe 14 via the connection pipe 21, the relay duct 19, and the connection pipe 20, and the suction flow of air generated in the suction hole 14h is generated. It acts on the fiber bundle F via the ventilation conveyance belt 15. Then, the fiber bundle F moves while being sucked and focused at a position corresponding to the suction hole 14h. Therefore, as compared with a spinning machine not provided with the fiber bundle concentrating device 10, the generation of fluff is suppressed and the yarn quality is improved.

次に、吸引ダクト３０におけるダクト形成体３１同士の連結部分について詳しく説明する。
図３に示すように、ダクト形成体３１の一端部３２は、他端部３３よりも拡径しており、一端部３２の内径は、他端部３３の外形よりも大きい。一端部３２の内周面は、一端部３２の開口に向かうにつれて末広がりとなる開口テーパ部３２ａを有している。ダクト形成体３１同士は、一方のダクト形成体３１の長手方向の一端部３２の内側に他方のダクト形成体３１の長手方向の他端部３３を嵌め込むことで連結されている。 Next, the connection part of the duct formation bodies 31 in the suction duct 30 will be described in detail.
As shown in FIG. 3, one end portion 32 of the duct forming body 31 has a larger diameter than the other end portion 33, and the inner diameter of the one end portion 32 is larger than the outer shape of the other end portion 33. The inner peripheral surface of the one end portion 32 has an opening taper portion 32 a that becomes wider toward the opening of the one end portion 32. The duct forming bodies 31 are connected to each other by fitting the other end 33 in the longitudinal direction of the other duct forming body 31 inside the one end 32 in the longitudinal direction of the one duct forming body 31.

吸引ダクト３０は、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に挿入されるとともにエアの吸引流の方向（図３において矢印Ｘ１で示す方向）に向かうにつれて先細になる挿入テーパ部３４ａを有する環状の弾性シール部材３４を備えている。弾性シール部材３４は、例えば、ゴムやエラストマー等から形成されている。弾性シール部材３４は、他方のダクト形成体３１の他端部３３の外周面に装着されており、弾性シール部材３４の内周面は、他方のダクト形成体３１の他端部３３の外周面に密着している。   The suction duct 30 is inserted between the inner peripheral surface of the one end portion 32 of one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31 and the direction of the air suction flow (see FIG. 3 is provided with an annular elastic seal member 34 having an insertion taper portion 34a that tapers in the direction (indicated by an arrow X1). The elastic seal member 34 is made of, for example, rubber or elastomer. The elastic seal member 34 is attached to the outer peripheral surface of the other end portion 33 of the other duct forming body 31, and the inner peripheral surface of the elastic seal member 34 is the outer peripheral surface of the other end portion 33 of the other duct forming body 31. It is in close contact with.

弾性シール部材３４は、挿入テーパ部３４ａに連続するとともに挿入テーパ部３４ａよりも厚みのある剛性補強部３４ｂを有している。剛性補強部３４ｂの厚みは、弾性シール部材３４の軸方向において一定である。また、剛性補強部３４ｂにおける弾性シール部材３４の軸方向に沿った長さＬ１は、挿入テーパ部３４ａにおける弾性シール部材３４の軸方向に沿った長さＬ２よりも長くなっている。さらに、弾性シール部材３４は、挿入テーパ部３４ａと剛性補強部３４ｂとの間に円環状の段差部３４ｃを有している。段差部３４ｃは、弾性シール部材３４の径方向に沿って延びている。   The elastic seal member 34 has a rigid reinforcing portion 34b that is continuous with the insertion taper portion 34a and has a thickness greater than that of the insertion taper portion 34a. The thickness of the rigid reinforcing portion 34 b is constant in the axial direction of the elastic seal member 34. Further, the length L1 along the axial direction of the elastic seal member 34 in the rigid reinforcing portion 34b is longer than the length L2 along the axial direction of the elastic seal member 34 in the insertion taper portion 34a. Furthermore, the elastic seal member 34 has an annular step 34c between the insertion taper 34a and the rigid reinforcement 34b. The step portion 34 c extends along the radial direction of the elastic seal member 34.

図４（ａ）及び（ｂ）に示すように、挿入テーパ部３４ａが一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に挿入される前の自然状態である挿入テーパ部３４ａのテーパ角度θ１は、開口テーパ部３２ａのテーパ角度θ２よりも大きい。   As shown in FIGS. 4A and 4B, the insertion taper portion 34 a is formed between the inner peripheral surface of one end portion 32 of one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31. The taper angle θ1 of the insertion taper portion 34a, which is a natural state before being inserted therebetween, is larger than the taper angle θ2 of the opening taper portion 32a.

次に、本実施形態の作用について説明する。
図３に示すように、一方のダクト形成体３１の一端部３２の内側に、弾性シール部材３４が予め装着された他方のダクト形成体３１の他端部３３を嵌め込む。そして、剛性補強部３４ｂを押し込んで、挿入テーパ部３４ａを一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間の奥まで挿入する。これにより、挿入テーパ部３４ａの外周面と一方のダクト形成体３１の一端部３２の内周面とが密着し、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間が挿入テーパ部３４ａによってシールされる。 Next, the operation of this embodiment will be described.
As shown in FIG. 3, the other end 33 of the other duct forming body 31 to which the elastic seal member 34 is attached in advance is fitted inside the one end 32 of the one duct forming body 31. And the rigid reinforcement part 34b is pushed in, and the insertion taper part 34a is pushed to the back between the inner peripheral surface of the one end part 32 of one duct formation body 31 and the outer peripheral surface of the other end part 33 of the other duct formation body 31. insert. Thereby, the outer peripheral surface of the insertion taper part 34a and the inner peripheral surface of the one end part 32 of the one duct forming body 31 are in close contact, and the inner peripheral surface of the one end part 32 of the one duct forming body 31 and the other duct forming body. A gap between the outer peripheral surface of the other end portion 33 of 31 is sealed by the insertion taper portion 34a.

また、負圧によるエアの吸引流の方向は、ダクト形成体３１の一端部３２から他端部３３に向かっているため、エアの吸引流による吸引作用によって、一方のダクト形成体３１に対して他方のダクト形成体３１が引き込まれようとする。このとき、挿入テーパ部３４ａが一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に喰い込むことで生じる楔効果により、一方のダクト形成体３１に対して他方のダクト形成体３１がそれ以上引き込まれなくなる。これにより、ダクト形成体３１同士の長手方向の相対位置が位置決めされる。   In addition, since the direction of the air suction flow due to the negative pressure is directed from the one end portion 32 of the duct forming body 31 toward the other end portion 33, the suction action by the air suction flow causes the one duct forming body 31 to move. The other duct forming body 31 tends to be drawn. At this time, due to the wedge effect caused by the insertion taper portion 34a biting between the inner peripheral surface of the one end portion 32 of one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31, The other duct forming body 31 is not drawn into the duct forming body 31 any more. Thereby, the relative position of the longitudinal direction of the duct formation bodies 31 is positioned.

ダクト形成体３１同士を分解する必要が生じた場合には、挿入テーパ部３４ａが、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間から引き抜かれるように、剛性補強部３４ｂを操作して、弾性シール部材３４を引き抜く。これにより、ダクト形成体３１同士が容易に分解される。   When it is necessary to disassemble the duct forming bodies 31, the insertion taper portion 34 a has an inner peripheral surface of one end portion 32 of one duct forming body 31 and an outer periphery of the other end portion 33 of the other duct forming body 31. The elastic reinforcing member 34 is pulled out by operating the rigidity reinforcing portion 34b so as to be pulled out from between the surfaces. Thereby, the duct formation bodies 31 are easily disassembled.

上記実施形態では以下の効果を得ることができる。
（１）吸引ダクト３０は、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に挿入されるとともにエアの吸引流の方向に向かうにつれて先細になる挿入テーパ部３４ａを有する環状の弾性シール部材３４を備えている。これによれば、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に挿入テーパ部３４ａが挿入されることにより、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間が挿入テーパ部３４ａによってシールされる。また、挿入テーパ部３４ａが一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に喰い込むことで生じる楔効果により、一方のダクト形成体３１に対して他方のダクト形成体３１がそれ以上引き込まれなくなり、ダクト形成体３１同士の長手方向の相対位置が位置決めされる。したがって、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間の隙間を介した内部へのエアの流入を抑制しつつも、ダクト形成体３１同士の連結部分を接着すること無く、ダクト形成体３１同士の長手方向の相対位置を位置決めすることができる。 In the above embodiment, the following effects can be obtained.
(1) The suction duct 30 is inserted between the inner peripheral surface of one end portion 32 of one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31 and An annular elastic seal member 34 having an insertion taper portion 34a that tapers in the direction is provided. According to this, the insertion taper portion 34 a is inserted between the inner peripheral surface of the one end portion 32 of the one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31. The gap between the inner peripheral surface of the one end portion 32 of the duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31 is sealed by the insertion taper portion 34a. Further, due to the wedge effect that occurs when the insertion taper portion 34a bites between the inner peripheral surface of one end portion 32 of one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31, The other duct forming body 31 is no longer drawn into the duct forming body 31 and the relative positions in the longitudinal direction of the duct forming bodies 31 are positioned. Therefore, while suppressing the inflow of air to the inside through the gap between the inner peripheral surface of the one end portion 32 of the one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31. The relative positions in the longitudinal direction of the duct forming bodies 31 can be positioned without adhering the connecting portions of the duct forming bodies 31.

（２）挿入テーパ部３４ａが一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に挿入される前の自然状態である挿入テーパ部３４ａのテーパ角度θ１は、開口テーパ部３２ａのテーパ角度θ２よりも大きい。ダクト形成体３１の一端部３２の内周面には、一端部３２の開口に向かうにつれて末広がりとなる開口テーパ部３２ａが形成されている場合がある。この場合であっても、挿入テーパ部３４ａを一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に挿入したときに、挿入テーパ部３４ａを一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に喰い込ませることができる。   (2) The insertion taper portion 34a is in a natural state before being inserted between the inner peripheral surface of the one end portion 32 of one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31. The taper angle θ1 of the insertion taper portion 34a is larger than the taper angle θ2 of the opening taper portion 32a. On the inner peripheral surface of the one end portion 32 of the duct forming body 31, there may be a case where an opening taper portion 32 a that becomes wider toward the opening of the one end portion 32 is formed. Even in this case, when the insertion taper portion 34a is inserted between the inner peripheral surface of the one end portion 32 of one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31, The insertion taper portion 34 a can be inserted between the inner peripheral surface of the one end portion 32 of one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31.

（３）弾性シール部材３４は、挿入テーパ部３４ａに連続するとともに挿入テーパ部３４ａよりも厚みのある剛性補強部３４ｂを有している。例えば、弾性シール部材３４における挿入テーパ部３４ａに連続する部位の厚みが、挿入テーパ部３４ａよりも薄い場合を考える。この場合、弾性シール部材３４における挿入テーパ部３４ａに連続する部位を押し込んで、挿入テーパ部３４ａを一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に挿入しようとしても、弾性シール部材３４における挿入テーパ部３４ａに連続する部位が撓み易い。よって、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に挿入テーパ部３４ａを挿入し難い。そこで、弾性シール部材３４が剛性補強部３４ｂを有することで、挿入テーパ部３４ａを一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に挿入する際に、剛性補強部３４ｂを押し込んでも、剛性補強部３４ｂが撓み難い。よって、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に挿入テーパ部３４ａを挿入し易くすることができる。   (3) The elastic seal member 34 has a rigid reinforcing portion 34b that is continuous with the insertion taper portion 34a and that is thicker than the insertion taper portion 34a. For example, consider a case where the thickness of the portion of the elastic seal member 34 that continues to the insertion taper portion 34a is thinner than the insertion taper portion 34a. In this case, a portion continuous to the insertion taper portion 34 a in the elastic seal member 34 is pushed in, and the insertion taper portion 34 a is inserted into the inner peripheral surface of one end portion 32 of one duct forming body 31 and the other end portion of the other duct forming body 31. Even if it is going to insert between the outer peripheral surface of 33, the site | part which continues to the insertion taper part 34a in the elastic seal member 34 tends to bend. Therefore, it is difficult to insert the insertion taper portion 34 a between the inner peripheral surface of the one end portion 32 of one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31. Therefore, the elastic seal member 34 has the rigidity reinforcing portion 34 b, so that the insertion taper portion 34 a can be used as the inner peripheral surface of the one end portion 32 of the one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31. Even when the rigid reinforcing portion 34b is pushed in during insertion, the rigid reinforcing portion 34b is difficult to bend. Therefore, the insertion taper portion 34 a can be easily inserted between the inner peripheral surface of the one end portion 32 of the one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31.

（４）弾性シール部材３４は、挿入テーパ部３４ａと剛性補強部３４ｂとの間に段差部３４ｃを有している。これによれば、弾性シール部材３４にエアの吸引流による吸引作用が作用して、弾性シール部材３４が引き込まれたとしても、段差部３４ｃが、一方のダクト形成体３１の一端部３２の開口端縁に当接するため、弾性シール部材３４がそれ以上引き込まれなくなる。よって、ダクト形成体３１同士の長手方向の相対位置がずれてしまうことを回避することができる。   (4) The elastic seal member 34 has a step 34c between the insertion taper 34a and the rigid reinforcement 34b. According to this, even when the elastic sealing member 34 is pulled by the suction action by the air suction flow, the stepped portion 34 c is opened in the one end portion 32 of the one duct forming body 31. Since it abuts against the edge, the elastic seal member 34 is not pulled any further. Therefore, it can avoid that the relative position of the longitudinal direction of the duct formation bodies 31 shift | deviates.

（５）弾性シール部材３４にエアの吸引流による吸引作用が作用して、弾性シール部材３４が引き込まれ、段差部３４ｃが、一方のダクト形成体３１の一端部３２の開口端縁に当接すると、一方のダクト形成体３１の一端部３２の開口端縁と段差部３４ｃとの間がシールされる。これによれば、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間の隙間を介した内部へのエアの流入をさらに抑制することができる。   (5) The elastic sealing member 34 is attracted by the air suction flow, and the elastic sealing member 34 is pulled in, so that the stepped portion 34 c comes into contact with the opening edge of the one end portion 32 of the one duct forming body 31. Then, the gap between the opening edge of the one end portion 32 of the one duct forming body 31 and the stepped portion 34c is sealed. According to this, the inflow of air to the inside through the gap between the inner peripheral surface of the one end portion 32 of one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31 is further increased. Can be suppressed.

（６）一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に挿入テーパ部３４ａを挿入したときに、挿入テーパ部３４ａの外周面と一方のダクト形成体３１の一端部３２の内周面との間に隙間が残っている場合がある。この場合であっても、弾性シール部材３４にエアの吸引流による吸引作用が作用することにより、挿入テーパ部３４ａが一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に喰い込む。よって、挿入テーパ部３４ａの外周面と一方のダクト形成体３１の一端部３２の内周面とが密着し、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間を挿入テーパ部３４ａによってシールすることができる。   (6) When the insertion taper portion 34a is inserted between the inner peripheral surface of the one end portion 32 of one duct formation body 31 and the outer peripheral surface of the other end portion 33 of the other duct formation body 31, the insertion taper portion 34a. In some cases, a gap may remain between the outer peripheral surface of the first duct forming body 31 and the inner peripheral surface of the one end portion 32 of the one duct forming body 31. Even in this case, the insertion taper portion 34a is caused to act on the inner peripheral surface of the one end portion 32 of the one duct formation body 31 and the other duct formation body by the suction action by the air suction flow acting on the elastic seal member 34. It bites between the outer peripheral surface of the other end 33 of 31. Therefore, the outer peripheral surface of the insertion taper portion 34 a and the inner peripheral surface of the one end portion 32 of the one duct forming body 31 are in close contact, and the inner peripheral surface of the one end portion 32 of the one duct forming body 31 and the other duct forming body 31. The other end 33 can be sealed with the insertion taper 34a.

（７）剛性補強部３４ｂにおける弾性シール部材３４の軸方向に沿った長さＬ１は、挿入テーパ部３４ａにおける弾性シール部材３４の軸方向に沿った長さＬ２よりも長くなっている。これによれば、例えば、剛性補強部３４ｂにおける弾性シール部材３４の軸方向に沿った長さＬ１が、挿入テーパ部３４ａにおける弾性シール部材３４の軸方向に沿った長さＬ２よりも短い場合に比べて、剛性補強部３４ｂの剛性を高めることができる。その結果、挿入テーパ部３４ａを一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間に挿入する際に、剛性補強部３４ｂを押し込んでも、剛性補強部３４ｂが撓み難い。   (7) The length L1 along the axial direction of the elastic seal member 34 in the rigid reinforcing portion 34b is longer than the length L2 along the axial direction of the elastic seal member 34 in the insertion taper portion 34a. According to this, for example, when the length L1 along the axial direction of the elastic seal member 34 in the rigid reinforcing portion 34b is shorter than the length L2 along the axial direction of the elastic seal member 34 at the insertion taper portion 34a. In comparison, the rigidity of the rigidity reinforcing portion 34b can be increased. As a result, when the insertion taper portion 34a is inserted between the inner peripheral surface of the one end portion 32 of the one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31, the rigidity reinforcing portion 34b. Even if it pushes in, the rigid reinforcement part 34b is hard to bend.

（８）ダクト形成体３１同士を分解する必要が生じた場合には、挿入テーパ部３４ａが、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間から引き抜かれるように、剛性補強部３４ｂを操作して、弾性シール部材３４を引き抜く。これにより、ダクト形成体３１同士を容易に分解することができる。これによれば、新たなダクト形成体３１を追加することも容易に行うことができる。   (8) When it is necessary to disassemble the duct forming bodies 31, the insertion taper portion 34 a has an inner peripheral surface of one end portion 32 of one duct forming body 31 and the other end portion of the other duct forming body 31. The elastic reinforcing member 34 is pulled out by operating the rigidity reinforcing portion 34b so as to be pulled out from between the outer peripheral surface 33 and the outer peripheral surface 33. Thereby, the duct formation bodies 31 can be easily disassembled. According to this, it is possible to easily add a new duct forming body 31.

なお、上記実施形態は以下のように変更してもよい。
○ 図５に示すように、弾性シール部材３４におけるダクト形成体３１と密着する面に複数の環状溝３４ｄを設けてもよい。弾性シール部材３４の内周面は、他方のダクト形成体３１の他端部３３の外周面に密着する面である。そして、弾性シール部材３４の内周面には、複数の環状溝３４ｄが弾性シール部材３４の軸方向に並んで形成されている。これによれば、複数の環状溝３４ｄがラビリンスシールとして機能するため、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間の隙間を介した内部へのエアの流入をさらに抑制し易くすることができる。また、弾性シール部材３４が劣化していき、他方のダクト形成体３１の他端部の外周面との密着性が低下してしまったとしても、複数の環状溝３４ｄがラビリンスシールとして機能することで、弾性シール部材３４の内周面と他方のダクト形成体３１の他端部３３の外周面との間のシール性を確保することができる。 In addition, you may change the said embodiment as follows.
As shown in FIG. 5, a plurality of annular grooves 34 d may be provided on the surface of the elastic seal member 34 that is in close contact with the duct forming body 31. The inner peripheral surface of the elastic seal member 34 is a surface that is in close contact with the outer peripheral surface of the other end portion 33 of the other duct forming body 31. A plurality of annular grooves 34 d are formed along the axial direction of the elastic seal member 34 on the inner peripheral surface of the elastic seal member 34. According to this, since the plurality of annular grooves 34d function as a labyrinth seal, between the inner peripheral surface of one end portion 32 of one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31. It is possible to further suppress the inflow of air into the inside through the gap. Moreover, even if the elastic seal member 34 deteriorates and the adhesiveness with the outer peripheral surface of the other end of the other duct forming body 31 decreases, the plurality of annular grooves 34d function as labyrinth seals. Thus, the sealing property between the inner peripheral surface of the elastic seal member 34 and the outer peripheral surface of the other end 33 of the other duct forming body 31 can be ensured.

○ 図５に示す実施形態において、挿入テーパ部３４ａの外周面に、複数の環状溝３４ｄをさらに形成してもよい。挿入テーパ部３４ａの外周面は、一方のダクト形成体３１の一端部３２の内周面に密着する面である。これによれば、複数の環状溝３４ｄがラビリンスシールとして機能するため、一方のダクト形成体３１の一端部３２の内周面と他方のダクト形成体３１の他端部３３の外周面との間の隙間を介した内部へのエアの流入をさらに抑制し易くすることができる。   In the embodiment shown in FIG. 5, a plurality of annular grooves 34d may be further formed on the outer peripheral surface of the insertion taper portion 34a. The outer peripheral surface of the insertion taper portion 34 a is a surface that is in close contact with the inner peripheral surface of the one end portion 32 of one duct forming body 31. According to this, since the plurality of annular grooves 34d function as a labyrinth seal, between the inner peripheral surface of one end portion 32 of one duct forming body 31 and the outer peripheral surface of the other end portion 33 of the other duct forming body 31. It is possible to further suppress the inflow of air into the inside through the gap.

○ 実施形態において、挿入テーパ部３４ａの外周面に、複数の環状溝３４ｄを形成してもよい。
○ 図６に示すように、弾性シール部材３４において、挿入テーパ部３４ａと剛性補強部３４ｂとの間に段差部３４ｃが形成されていなくてもよく、挿入テーパ部３４ａと剛性補強部３４ｂと直接繋がっていてもよい。 In the embodiment, a plurality of annular grooves 34d may be formed on the outer peripheral surface of the insertion taper portion 34a.
As shown in FIG. 6, in the elastic seal member 34, the stepped portion 34 c may not be formed between the insertion tapered portion 34 a and the rigid reinforcing portion 34 b, and the insertion tapered portion 34 a and the rigid reinforcing portion 34 b directly It may be connected.

○ 実施形態において、弾性シール部材３４が、剛性補強部３４ｂを有していなくてもよく、弾性シール部材３４全体が挿入テーパ部３４ａにより形成されていてもよい。
○ 実施形態において、挿入テーパ部３４ａのテーパ角度θ１と、開口テーパ部３２ａのテーパ角度θ２とが同じ角度であってもよい。 In the embodiment, the elastic seal member 34 may not have the rigidity reinforcing portion 34b, and the entire elastic seal member 34 may be formed by the insertion taper portion 34a.
In the embodiment, the taper angle θ1 of the insertion taper portion 34a and the taper angle θ2 of the opening taper portion 32a may be the same angle.

○ 実施形態において、剛性補強部３４ｂにおける弾性シール部材３４の軸方向に沿った長さＬ１と、挿入テーパ部３４ａにおける弾性シール部材３４の軸方向に沿った長さＬ２とが同じ長さであってもよい。   In the embodiment, the length L1 along the axial direction of the elastic seal member 34 in the rigidity reinforcing portion 34b and the length L2 along the axial direction of the elastic seal member 34 in the insertion taper portion 34a are the same length. May be.

○ 実施形態において、ダクト形成体３１の一端部３２の内周面が、一端部３２の開口に向かうにつれて末広がりとなる開口テーパ部３２ａになっていなくてもよく、ダクト形成体３１の軸方向に沿って直線状に延びていてもよい。   In the embodiment, the inner peripheral surface of the one end portion 32 of the duct forming body 31 may not be the opening taper portion 32a that becomes wider toward the opening of the one end portion 32, and in the axial direction of the duct forming body 31. It may extend linearly along.

○ 実施形態において、各ダクト形成体３１は、各中継ダクト１９に対応する長さに形成されていたが、これに限らず、ダクト形成体３１の長さは適宜変更してもよい。
○ 実施形態において、吸引ダクト３０は、例えば、四角筒状であってもよく、その形状は、筒状であれば特に限定されるものではない。 In the embodiment, each duct forming body 31 is formed to a length corresponding to each relay duct 19, but this is not limiting, and the length of the duct forming body 31 may be changed as appropriate.
In embodiment, the suction duct 30 may be a square cylinder shape, for example, and the shape will not be specifically limited if it is a cylinder shape.

○ 実施形態において、ダクト形成体３１は、例えば、金属製であってもよく、その材質は特に限定されるものではない。
○ 実施形態において、負圧源２２として、例えば、真空ポンプを用いてもよい。 In embodiment, the duct formation body 31 may be metal, for example, and the material is not specifically limited.
In the embodiment, for example, a vacuum pump may be used as the negative pressure source 22.

○ 実施形態において、紡機における吸引ダクトをニューマ装置のニューマダクトに具体化してもよい。そして、ニューマダクトを構成する一方のダクト形成体の一端部の内周面と他方のダクト形成体の他端部の外周面との間に、弾性シール部材３４の挿入テーパ部３４ａを挿入してもよい。   In the embodiment, the suction duct in the spinning machine may be embodied as a pneumatic duct of a pneumatic apparatus. Then, the insertion taper portion 34a of the elastic seal member 34 is inserted between the inner peripheral surface of one end of one duct forming body constituting the pneumatic duct and the outer peripheral surface of the other end of the other duct forming body. Also good.

３０…吸引ダクト、３１…ダクト形成体、３２…一端部、３２ａ…開口テーパ部、３３…他端部、３４…弾性シール部材、３４ａ…挿入テーパ部、３４ｂ…剛性補強部、３４ｃ…段差部、３４ｄ…環状溝。   DESCRIPTION OF SYMBOLS 30 ... Suction duct, 31 ... Duct formation body, 32 ... One end part, 32a ... Opening taper part, 33 ... Other end part, 34 ... Elastic sealing member, 34a ... Insertion taper part, 34b ... Rigid reinforcement part, 34c ... Step part , 34d ... annular groove.

Claims (6)

筒状のダクト形成体を複数有し、前記ダクト形成体同士は、一方のダクト形成体の長手方向の一端部の内側に他方のダクト形成体の長手方向の他端部を嵌め込むことで連結されており、内部に負圧が作用している紡機における吸引ダクトであって、
前記負圧によるエアの吸引流の方向は、前記ダクト形成体の一端部から他端部に向かっており、
前記一方のダクト形成体の一端部の内周面は開口にむかうにつれて末広がりとなる開口テーパ部を有するとともに、前記他方のダクト形成体の他端部の外周面はダクト成形体の軸方向に沿って直線状に延びており、
前記一方のダクト形成体の一端部の内周面と前記他方のダクト形成体の他端部の外周面との間に挿入されるとともに前記エアの吸引流の方向に向かうにつれて先細になる挿入テーパ部を有する環状の弾性シール部材を備えたことを特徴とする紡機における吸引ダクト。 A plurality of cylindrical duct forming bodies are connected, and the duct forming bodies are connected by fitting the other end portion in the longitudinal direction of the other duct forming body inside the one end portion in the longitudinal direction of one duct forming body. A suction duct in a spinning machine in which a negative pressure acts inside,
The direction of the air suction flow due to the negative pressure is from one end of the duct forming body to the other end,
The inner peripheral surface of one end of the one duct forming body has an opening taper portion that becomes wider toward the opening, and the outer peripheral surface of the other end of the other duct forming body is along the axial direction of the duct forming body. Extending in a straight line,
Insertion taper inserted between the inner peripheral surface of one end of the one duct forming body and the outer peripheral surface of the other end of the other duct forming body and tapered toward the air suction flow direction A suction duct in a spinning machine comprising an annular elastic seal member having a portion. 筒状のダクト形成体を複数有し、前記ダクト形成体同士は、一方のダクト形成体の長手方向の一端部の内側に他方のダクト形成体の長手方向の他端部を嵌め込むことで連結されており、内部に負圧が作用している紡機における吸引ダクトであって、A plurality of cylindrical duct forming bodies are connected, and the duct forming bodies are connected by fitting the other end portion in the longitudinal direction of the other duct forming body inside the one end portion in the longitudinal direction of one duct forming body. A suction duct in a spinning machine in which a negative pressure acts inside,
前記負圧によるエアの吸引流の方向は、前記ダクト形成体の一端部から他端部に向かっており、  The direction of the air suction flow due to the negative pressure is from one end of the duct forming body to the other end,
前記一方のダクト形成体の一端部の内周面と前記他方のダクト形成体の他端部の外周面との間に挿入されるとともに前記エアの吸引流の方向に向かうにつれて先細になる挿入テーパ部を有する環状の弾性シール部材を備え、  Insertion taper inserted between the inner peripheral surface of one end of the one duct forming body and the outer peripheral surface of the other end of the other duct forming body and tapered toward the air suction flow direction An annular elastic seal member having a portion,
前記弾性シール部材は、前記挿入テーパ部に連続するとともに前記挿入テーパ部よりも厚みのある剛性補強部を有し、  The elastic seal member has a rigid reinforcing portion that is continuous with the insertion taper portion and is thicker than the insertion taper portion,
前記弾性シール部材は、前記挿入テーパ部と前記剛性補強部との間に段差部を有していることを特徴とする紡機における吸引ダクト。  The suction duct in a spinning machine, wherein the elastic seal member has a step portion between the insertion taper portion and the rigid reinforcement portion. 前記ダクト形成体の一端部の内周面は、前記一端部の開口に向かうにつれて末広がりとなる開口テーパ部を有し、
前記挿入テーパ部が前記一方のダクト形成体の一端部の内周面と前記他方のダクト形成体の他端部の外周面との間に挿入される前の自然状態である前記挿入テーパ部のテーパ角度は、前記開口テーパ部のテーパ角度よりも大きいことを特徴とする請求項１又は２に記載の紡機における吸引ダクト。 The inner peripheral surface of the one end portion of the duct forming body has an opening taper portion that becomes wider toward the opening of the one end portion,
The insertion taper portion is in a natural state before being inserted between the inner peripheral surface of one end portion of the one duct forming body and the outer peripheral surface of the other end portion of the other duct forming body. The suction duct in the spinning machine according to claim 1 or 2 , wherein a taper angle is larger than a taper angle of the opening taper portion. 前記弾性シール部材は、前記挿入テーパ部に連続するとともに前記挿入テーパ部よりも厚みのある剛性補強部を有していることを特徴とする請求項１に記載の紡機における吸引ダクト。 2. The suction duct in a spinning machine according to claim 1, wherein the elastic seal member includes a rigid reinforcing portion that is continuous with the insertion taper portion and is thicker than the insertion taper portion. 前記弾性シール部材は、前記挿入テーパ部と前記剛性補強部との間に段差部を有していることを特徴とする請求項４に記載の紡機における吸引ダクト。 The suction duct in the spinning machine according to claim 4 , wherein the elastic seal member has a step portion between the insertion taper portion and the rigid reinforcement portion. 前記弾性シール部材における前記ダクト形成体と密着する面に複数の環状溝を設けたことを特徴とする請求項１〜請求項５のいずれか一項に記載の紡機における吸引ダクト。 The suction duct in the spinning machine according to any one of claims 1 to 5 , wherein a plurality of annular grooves are provided on a surface of the elastic seal member that is in close contact with the duct forming body.
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