EP2628830B1 - Yarn processing device - Google Patents

Yarn processing device Download PDF

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Publication number
EP2628830B1
EP2628830B1 EP11832363.3A EP11832363A EP2628830B1 EP 2628830 B1 EP2628830 B1 EP 2628830B1 EP 11832363 A EP11832363 A EP 11832363A EP 2628830 B1 EP2628830 B1 EP 2628830B1
Authority
EP
European Patent Office
Prior art keywords
yarn
nozzle
collision body
processing device
collision
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.)
Not-in-force
Application number
EP11832363.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2628830A4 (en
EP2628830A1 (en
Inventor
Minoru Kuninaga
Akio Mizomata
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.)
JTC Co Ltd
Aiki Riotech Corp
Original Assignee
JTC Co Ltd
Aiki Riotech 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 JTC Co Ltd, Aiki Riotech Corp filed Critical JTC Co Ltd
Publication of EP2628830A1 publication Critical patent/EP2628830A1/en
Publication of EP2628830A4 publication Critical patent/EP2628830A4/en
Application granted granted Critical
Publication of EP2628830B1 publication Critical patent/EP2628830B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam

Definitions

  • the present invention relates to a yarn processing device that imparts loftiness to yarns by ejecting fluid onto the yarns and forming entanglements, loops, or the like.
  • a known yarn processing device imparts loftiness to a yarn constituted by filaments made of synthetic resin or the like by ejecting fluid onto the yarn and forming entanglements, loops or the like on the filaments.
  • Patent Literatures 1 and 2 discloses a yarn processing device including a yarn path having a yarn introducing part and a yarn ejecting part, a nozzle having an air injection hole that ejects compressed air into the yarn path, and a spherical collision body arranged to oppose a yarn ejecting part of the nozzle.
  • Patent Literatures 1 and 2 a yarn is introduced from the yarn introducing part, passes through the yarn path to which air is ejected, and is discharged from the yarn ejecting part.
  • the air ejected from the yarn ejecting part collides the spherical collision body and flows along the surface thereof.
  • the yarn is ejected through a gap between the yarn ejecting part and the collision body.
  • loops, entanglements or the like are formed on the filaments by the airflow in the yarn ejecting part, with the result that loftiness is imparted to the yarn.
  • Patent Literatures 1 and 3 also disclose a yarn processing device where a part of the collision body has a concave shape.
  • An object of the present invention is to provide a yarn processing device with high yarn processing capability.
  • a yarn processing device according to the invention is defined in appended claim 1.
  • the opposing part of the collision body opposing the outlet of the nozzle has a concave shape
  • a large space is formed between the yarn ejecting part of the nozzle and the collision body, and this facilitates the generation of turbulence of the flow of the fluid in the space.
  • the yarn processing capability is improved.
  • the quality of produced yarns is unchanged or improved even if the processing is conducted at a higher yarn speed, and hence the productivity is improved.
  • the yarn processing device of the first aspect is arranged so that an inner surface of the concave opposing part of the collision body is formed by a curved surface.
  • the fluid ejected from the yarn ejecting part together with the yarn flows along the inner surface of the inner space of the opposing part. This restrains the fluid from being locally stagnant, and hence the generation of loops and entanglements in the filaments is further facilitated and the yarn processing capability is improved.
  • the yarn processing device of the first or second aspect is arranged so that the opposing part of the collision body is formed to be deepest at a central part.
  • the yarn ejected from the yarn ejecting part converges on and collides the deepest part of the concave portion. Because the yarn intensively collides a part of the collision body, the subsequent yarn processing (the formation of loops and entanglements) is stably carried out, and hence the yarn processing capability is improved.
  • the yarn processing device of the first is arranged so that the opposing part of the collision body is circular-arc-shaped or partial-elliptical-shaped in cross section.
  • the inner surface of the opposing part is curved and deepest at the central part thereof. Therefore, as described in the second and third aspects, the fluid is hardly locally stagnant and the generation of loops and entanglements in the filaments is further facilitated and stably done, with the result that the yarn processing capability is further improved.
  • the yarn processing device of any one of the first to fourth aspects is arranged so that, on the opposing part of the collision body, a concave portion and a flat portion, which is in parallel to the leading end face of the yarn ejecting part including the outlet and surrounds the concave portion, are formed.
  • the periphery of the part is sharp.
  • processing variation of the shape of the periphery of the collision body is not negligible and small cracks may be formed at the periphery, and the yarn processing is significantly influenced.
  • variations in the tension of the yarn and the occurrence of fluffs are caused.
  • the opposing part of the collision body has the concave portion and the flat portion surrounding the concave portion, processing variation of the shape of the periphery of the collision body is small and cracks hardly occur, with the result that the yarn processing is stably done.
  • the yarn processing device further includes a nozzle holder that holds the nozzle, the collision body being attached to the nozzle holder, and the nozzle holder being provided with a yarn guide which is configured to guide a yarn having passed through a gap between the yarn ejecting part of the nozzle and the collision body.
  • a yarn guide is preferably provided on the downstream of the nozzle.
  • the tension of the yarn varies in accordance with the position of the nozzle with respect to the yarn guide, when a yarn guide is provided independently of the yarn processing device, it is necessary to conduct a tiresome operation to suitably adjust the tension of the yarn, that is, an operation to adjust the position of the yarn guide with respect to the yarn processing device (i.e., the nozzle) after the yarn processing device is installed.
  • the nozzle holder including the nozzle and the collision body further includes the yarn guide and hence the nozzle, the collision body, and the yarn guide are integrated, the position of the yarn guide is automatically determined when the yarn processing device is installed at a predetermined position, and it is therefore unnecessary to adjust the position of the yarn guide.
  • the opposing part of the collision body opposing the outlet of the nozzle has a concave shape
  • a large space is provided between the yarn ejecting part of the nozzle and the collision body, and the turbulence of the flow of the fluid in the space is facilitated.
  • the turbulence of the flow of the fluid in the space facilitates the formation of loops and entanglements in the filaments ejected from the yarn ejecting part, and the yarn processing capability is improved.
  • the yarn processing capability is improved, the quality of produced yarns is unchanged or improved even if the processing is conducted at a higher yarn speed, and hence the productivity is improved.
  • FIG. 1 is a front elevation of a yarn processing device of the present embodiment
  • FIG. 2 is a left side view of the yarn processing device
  • FIG. 3 is a cross section of a part of the yarn processing device shown in FIG. 1
  • FIG. 4(a) is an enlarged view of the nozzle and the collision body shown in FIG. 3
  • FIG. 4 (b) is a right side view of the collision body shown in FIG. 4(a) .
  • the directions, i.e., upward, downward, leftward, and rightward in FIG. 1 and FIG. 3 are used throughout the descriptions below.
  • the yarn processing device 1 includes a nozzle 2, a nozzle holder 3 holding the nozzle 2, and a collision body 4 provided at the nozzle holder 3.
  • the nozzle 2 is a cylindrical component made of a hard material such as metal and ceramics, and is provided with, at one end, a flange portion 2a protruding in radial directions. Inside the nozzle 2 is provided a yarn path 10 that extends in an axial direction of the cylindrical nozzle 2.
  • the yarn path 10 includes a yarn introducing part 11 formed on the flange portion 2a side (i.e., right side) of the nozzle 2, a yarn ejecting part 12 formed on the side opposite to the flange portions 2a (i.e., left side) of the nozzle 2, and an air introducing part 13 connecting the yarn introducing part 11 with the yarn ejecting part 12.
  • an inlet 11a is formed to introduce a yarn 31.
  • the yarn introducing part 11 is formed such that the internal diameter thereof reduces from the inlet 11a side to the leading end side (i.e., to the left side in the figure).
  • an outlet 12a is formed at the left end face of the nozzle 2 on the side opposite to the flange portion 2a to eject the yarn 31 having been introduced into the yarn path 10.
  • the yarn ejecting part 12 is formed so that the internal diameter thereof increases toward the outlet 12a.
  • the diameter-decreasing yarn introducing part 11 and the diameter-increasing yarn ejecting part 12 are, for example, tapered in shape or horn-shaped such that the degree of widening (curvature) at the peripheral part is larger than that of the tapered shape.
  • the yarn introducing part 11 is horn-shaped whereas the yarn ejecting part 12 is tapered.
  • an air injection hole 14 (fluid injection hole) which is open to an air introducing part 13 of the yarn path 10. While FIG. 4(a) shows only one air injection hole 14, in reality a plurality of (three for example) air injection holes 14 are provided at equal intervals along the circumference of the nozzle 2.
  • the air injection hole 14 extends to incline toward the leading end side (left side) of the yarn path 10 with respect to the radial directions of the nozzle 2 (i.e., the directions orthogonal to the yarn path 10), with the result that strong leftward airflow is generated when air is ejected into the yarn path 10.
  • the nozzle holder 3 will be described. As shown in FIG. 1 to FIG. 3 , the nozzle holder 3 is rectangular parallele piped and slightly long in the vertical direction. In the upper part of this nozzle holder 3, an attaching hole 20 is formed to horizontally penetrate the nozzle holder 3. To this attaching hole 20, the above-described nozzle 2 is inserted. In this regard, the diameter of the attaching hole 20 is arranged to be smaller than the outer diameter of the flange portion 2a of the nozzle 2.
  • the flange portion 2a provided at the right end portion of the nozzle 2 contacts the right side of the nozzle holder 3 without being inserted into the attaching hole 20, with the result that the nozzle 2 is positioned with respect to the nozzle holder 3. Furthermore, as shown in FIG. 1 , to the nozzle holder 3 is attached a regulator 22 that prevents the nozzle 2 inserted into the attaching hole 20 from jutting out rightward.
  • a vertically-extending air supply hole 21 Inside the nozzle holder 3 is formed a vertically-extending air supply hole 21. This air supply hole 21 is connected to an unillustrated air supply source.
  • the air injection hole 14 formed in the nozzle 2 is connected to the air supply hole 21 and the air supplied from the air supply hole 21 is ejected from the air injection hole 14 to the yarn path 10.
  • the collision body 4 is a substantially disc-shaped member and is made of a hard material such as metal and ceramics. This collision body 4 opposes, over a small gap, the left end face of the nozzle 2 attached to the nozzle holder 3 (i,e., the leading end face of the yarn ejecting part 12 on which face the outlet 12a is formed).
  • a concave portion 4a is formed at a central part to oppose the outlet 12a.
  • the inner surface of this concave portion 4a is arranged to be circular-arc-shaped in a cross section taken at the plane including the central axis of the nozzle 2. Furthermore, the concave portion 4a is surrounded by a flat portion 4b which has a flat surface in parallel to the leading end face of the yarn ejecting part 12.
  • an attaching base member 23 is fixed to the lower left side of the nozzle holder 3 by a bolt or the like, and a lower part of a block-shaped holder 24 is connected to the attaching base member 23 to be rotatable along the vertical surface. Furthermore, to the holder 24 is fixed an end of a connection rod 25, whereas the other end of the connection rod 25 is fixed to the collision body 4. According to this arrangement, as indicated by two-dot chain lines in FIG.
  • the collision body 4 when the holder 24 is rotated with respect to the attaching base member 23, the collision body 4 is rotated together with the holder 24.
  • the collision body 4 is movable between the position where the collision body 4 opposes the outlet 12a of the nozzle holder (i.e., the position indicated by the full lines) and the retracted position where the collision body 4 is distant from the outlet 12a (i.e., the position indicated by the two-dot chain lines). With this, the yarn is easily introduced into the nozzle 2 by moving the collision body 4 to the retracted position.
  • a yarn guide is preferably provided on the downstream of the nozzle 2.
  • the tension of the yarn on the nozzle downstream side is varied in accordance with the position of the yarn guide with respect to the nozzle 2.
  • the present embodiment is arranged so that a yarn guide 26 for guiding the yarn ejected from the nozzle 2 is attached to the attaching base member 23 fixed to the nozzle holder 3, via an attaching member 27. That is to say, the yarn guide 26 is further attached to the nozzle holder 3 having the nozzle 2 and the collision body 4, and the nozzle 2, the collision body 4, and the yarn guide 26 are integrated.
  • the yarn introduced into the nozzle 2 from the right side in FIG. 1 and ejected from the yarn ejecting part 12 passes through the yarn guide on the viewer side in FIG. 1 (on the right side in FIG. 2 ) and is then guided upward.
  • the position of the yarn guide 26 is automatically determined when the yarn processing device 1 is installed at a predetermined position, and it is therefore unnecessary to adjust the position of the yarn guide 26 with respect to the nozzle 2.
  • the air ejected into the air introducing part 13 is discharged from the yarn ejecting part 12, and collides the collision body 4 which is provided to oppose the outlet 12a.
  • the yarn 31 is ejected through the gap between the collision body 4 and the yarn ejecting part 12.
  • the filaments constituting the yarn 31 are unwound on account of strong airflow in the yarn ejecting part 12, and loops and entanglements are formed as each filament severely vibrates. As such, loftiness is imparted to the yarn 31.
  • the concave portion 4a is formed on the surface of the collision body 4 which surface opposes the outlet 12a. For this reason, a large space is provided between the yarn ejecting part 12 of the nozzle 2 and the collision body 4, and this facilitates the generation of turbulence of airflow. Because the generation of loops and entanglements in the filaments ejected from the yarn ejecting part 12 is accelerated on account of the turbulence of airflow, the yarn processing capability is improved. When the processing capability of the yarn processing device 1 is improved, the quality of produced yarns is unchanged or improved even if the processing is conducted at a higher yarn speed, and hence the productivity is improved and an amount of air required to produce a unit length of yarn is reduced.
  • the concave portion 4a of the collision body 4 is formed to have a curved surface which is circular-arc-shaped in cross section.
  • the concave portion 4a has such a curved surface, the air ejected from the yarn ejecting part 12 along with the yarn flows in the space in the concave portion 4a along the inner surface thereof. This restrains the air from being locally stagnant, and the formation of loops and entanglements on the filaments is further facilitated.
  • the concave portion 4a which is circular-arc-shaped in cross section is deepest at the central part (where the central axis of the nozzle 2 passes through), and the yarn ejected from the yarn ejecting part 12 converges on and collides the deepest part of the concave portion 4a. Because the yarn intensively collides a part of the collision body 4, the subsequent yarn processing (the formation of loops and entanglements) is stably carried out, and hence the yarn processing capability is improved.
  • the concave portion 4a and the flat portion 4b surrounding the concave portion are formed at the opposing part of the collision body 4 which part opposes the outlet 12a.
  • the yarn processing is stable in this case, because, as compared to a case where the entirety of the opposing part of the collision body 4 is formed to have a concave shape and the edge (outer periphery) is sharp (as in a later-described modification shown in FIG. 5(e) ), processing variation of the shape of the edge (outer periphery) of the opposing part of the collision body 4 is restrained, and the formation of cracks is restrained.
  • the outer diameter of the collision body 4 is D
  • the diameter of the concave portion 4a is d
  • the width of the flat portion 4b is t
  • the width t of the flat portion 4b preferably falls within the range of 0 ⁇ t ⁇ 5 (mm).
  • the partial elliptical concave portion 4a shown in FIG. 5(a) is, in the same manner as the circular-arc-shaped concave portion of the embodiment above (see FIG. 4 ), has a curved inner surface.
  • the air flows along the inner surface and hardly locally stagnant, and hence the formation of loops and entanglements on the filaments is facilitated.
  • the yarn intensively collides the deepest part of the collision body 4, and hence the subsequent yarn processing is stably carried out.
  • the concave portion 4a is formed only at a part of the surface of the collision body 4 which surface is on the outlet 12a side and the concave portion 4a is surrounded by the flat portion 4b
  • the entirety of the surface of the collision body 4 on the outlet 12a side may be a concave portion 4a as shown in FIG. 5(e) .
  • the nozzle 2 may be shaped differently from the shape of the embodiment above shown in FIG. 4 (a) .
  • the yarn introducing part 11 is tapered whereas the yarn ejecting part 12 is horn-shaped.
  • the yarn introducing part 11 may have a straight shape with constant diameter.
  • the collision body 4 While in the embodiment above the collision body 4 is arranged to be movable (rotatable) with respect to the nozzle holder 3, the collision body 4 may be fixed with respect to the nozzle holder 3.
  • the nozzle No.1 and the nozzle No.2 in Table 1 are nozzles shown in the left column (1) in FIG. 7 .
  • the nozzle No.3 and the nozzle No.4 in Table 2 are nozzles shown in the right column (2) in FIG. 7 .
  • the nozzle No.1 is different from the nozzle No.2 in the diameter of the air injection hole, i.e., they are slightly different from each other in the thickness range of the yarn (the nozzle No.1 is for narrow yarns whereas the nozzle No.2 is for thick yarns).
  • the nozzle No.3 and the nozzle No.4 are slightly different from each other in the thickness range of the yarn.
  • Table 7 the result of measurement of the yarn tension on the discharging side when the thickness of nylon yarn (PA6) was 140 denier is shown in Table 7.
  • Table 3 to Table 7 a nozzle suitable for the thickness of the yarn was appropriately selected from the four types of nozzles shown in Table 1.
  • the yarn processing capability is typically improved when the yarn speed is low, because the yarn tension on the discharging side is high.
  • the yarn speed must be decreased to achieve a certain level of processing quality (i.e., a certain level of yarn tension) .
  • the concave collision body of the present invention when used, yarns having the same or improved quality as those produced by spherical or planer collision bodies are produced at a higher yarn speed, and hence the productivity is improved.
  • the yarn tension was high as compared to the case of the planar collision body when the diameter of the concave portion fell within the range of 11mm to 24mm, and the processing capability was improved.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP11832363.3A 2010-10-15 2011-09-07 Yarn processing device Not-in-force EP2628830B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010232624 2010-10-15
PCT/JP2011/070376 WO2012049924A1 (ja) 2010-10-15 2011-09-07 糸処理装置

Publications (3)

Publication Number Publication Date
EP2628830A1 EP2628830A1 (en) 2013-08-21
EP2628830A4 EP2628830A4 (en) 2014-04-02
EP2628830B1 true EP2628830B1 (en) 2015-07-01

Family

ID=45938158

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11832363.3A Not-in-force EP2628830B1 (en) 2010-10-15 2011-09-07 Yarn processing device

Country Status (5)

Country Link
EP (1) EP2628830B1 (ja)
JP (1) JP5754817B2 (ja)
KR (1) KR101606376B1 (ja)
TW (1) TWI586859B (ja)
WO (1) WO2012049924A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019076429A1 (de) * 2017-10-16 2019-04-25 Heberlein Ag Verwirbelungsdüse oder texturierdüse und vorrichtung zum behandeln von garn

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2634460C2 (de) * 1976-07-29 1982-07-01 Heberlein Maschinenfabrik AG, 9630 Wattwil Vorrichtung zum Texturieren von aus endlosen, synthetischen Filamenten bestehenden Garnen
DE19605675C5 (de) * 1996-02-15 2010-06-17 Oerlikon Heberlein Temco Wattwil Ag Verfahren zum aerodynamischen Texturieren sowie Texturierdüse
JP2001140137A (ja) * 1999-11-12 2001-05-22 Unitika Ltd 糸条衝突体を備えた流体噴射装置。
KR200296972Y1 (ko) * 2002-08-26 2002-12-05 이화공업주식회사 인터레이스기의 노즐부 실 날림 방지용 가이드 텐션장치
CN2591054Y (zh) * 2002-12-19 2003-12-10 陈家寿 新型空气变形喷嘴

Also Published As

Publication number Publication date
KR20140010365A (ko) 2014-01-24
TWI586859B (zh) 2017-06-11
EP2628830A4 (en) 2014-04-02
KR101606376B1 (ko) 2016-03-25
TW201229342A (en) 2012-07-16
WO2012049924A1 (ja) 2012-04-19
EP2628830A1 (en) 2013-08-21
JP5754817B2 (ja) 2015-07-29
JPWO2012049924A1 (ja) 2014-02-24

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