EP1783253B1 - Vorrichtung zum Verdichten von Faserbündeln in einer Spinnmaschine und Verfahren zum Herstellen eines perforierten Riemchens - Google Patents

Vorrichtung zum Verdichten von Faserbündeln in einer Spinnmaschine und Verfahren zum Herstellen eines perforierten Riemchens Download PDF

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Publication number
EP1783253B1
EP1783253B1 EP06123395A EP06123395A EP1783253B1 EP 1783253 B1 EP1783253 B1 EP 1783253B1 EP 06123395 A EP06123395 A EP 06123395A EP 06123395 A EP06123395 A EP 06123395A EP 1783253 B1 EP1783253 B1 EP 1783253B1
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EP
European Patent Office
Prior art keywords
yarns
perforated belt
fiber bundle
fused
fused regions
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Application number
EP06123395A
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English (en)
French (fr)
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EP1783253A3 (de
EP1783253A2 (de
Inventor
Naoki Maruyama
Takahisa Ishii
Yoshimasa Fujii
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Toyota Industries Corp
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Toyota Industries Corp
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Publication of EP1783253A3 publication Critical patent/EP1783253A3/de
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Classifications

    • 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
    • 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
    • D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/66—Suction devices exclusively
    • D01H5/68—Suction end-catchers
    • 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
    • D01H5/86—Aprons; Apron supports; Apron tensioning arrangements

Definitions

  • the present invention relates to a fiber bundle concentrating device in a spinning machine, and in particular, to a fiber bundle concentrating device located downstream of a draft machine (draft part) in a fine spinning machine, which bundle concentrating device concentrates fiber bundle that has been drafted by the draft machine.
  • Various fiber bundle concentrating devices have been proposed for concentrating a drafted fiber bundle in advance, before twisting, for the purpose of enhancing the quality of yarn in such a manner as to reduce fluff.
  • an endless perforated belt is used for, as a basic function, concentrating and transporting fiber bundles.
  • a belt perforated with many horizontal holes is formed of a textile using a polyamide multifilament yarn.
  • Patent Document 1 Japanese Laid-Open Patent Publication No. 2004-346472 (paragraphs [0021] to[0023], Figs. 1 and 3 )
  • warp yarns 51 and weft yarns 52 are made to overlap and a heating process is carried out, and thereby, warp yarns 51 and weft yarns 52 are fused and fixed to each other at all intersecting portions. Accordingly, even in cases where warp yarns 51 or weft yarns 52 that form the conveyor belt (perforated belt) breaks, the ends of broken yarns are prevented from becoming entangled with the spun fiber bundles that that have been delivered. In addition, even if the yarns are frayed, the level of fraying is prevented from deteriorating.
  • a fiber bundle concentrating device in a spinning machine concentrates fiber bundles drafted by a draft part.
  • the device includes a fiber bundle delivery portion, a suction portion, and a perforated belt.
  • the fiber bundle delivery portion includes a nip roller, and is located downstream of a final delivery roller pair of the draft part.
  • the suction portion has a guide surface.
  • the guide surface has a suction hole at least in a section upstream of a nip point of the delivery portion in a moving direction of the fiber bundles.
  • the perforated belt rotates while sliding on the guide surface.
  • the perforated belt is formed as a sheet body that contains intersecting sets of yarns.
  • Part of intersecting portions of the yarns are fused such that fused regions, where the fused intersecting portions are adjacent to each other, and non-fused regions, where the non-fused intersecting portions are adjacent to each other, are alternately arranged at least in a circumferential direction of the perforated belt.
  • a method for manufacturing a perforated belt includes: forming a cylindrical sheet body with intersecting sets of yarns, wherein the yarns in at least one of the sets are thermally fusing yarns; and engaging the sheet body with a cylindrical body having a closed end from the outside, the cylindrical body having a plurality of holes in a circumferential surface, and supplying into the cylindrical body a gas of a temperature that is equal to or higher than the melting point of the thermally fusing yarns, thereby fusing the intersecting yarns to each other at positions of the sheet body that correspond to the holes by the heat of the gas blown out of the holes.
  • the fiber bundle concentrating device has basically the same configuration as the fiber bundle concentrating device in the application by the present applicant ( Japanese Laid-Open Patent Publication 2003-113450 ). As shown in Fig. 1A , a fiber bundle concentrating device 11 is provided on the downstream side of the final delivery roller pairs 13 in a draft machine 12 which serves as a draft part. Each final delivery roller pair 13 is formed of a front bottom roller 14 and a front top roller 15.
  • the fiber bundle concentrating device 11 is provided with nip roller pairs 16 which serves as a fiber bundle delivery portion, suction portions 17, and perforated belts 18.
  • Each nip roller pair 16 is formed of a bottom nip roller 19a which serves as a driving roller portion that is formed around a rotary shaft 19 provided parallel to the front bottom roller 14, and a top nip roller 20 which is pressed against the bottom nip roller 19a with the corresponding perforated belt 18 in between.
  • Each top nip roller 20 is supported by a weighting arm (not shown) with a support member 21 provided in between for every two spindles, in the same way as the front top roller 15 in the draft machine 12.
  • Each support member 21 is formed so as to be integrated with the corresponding support member for the front top roller 15.
  • a support arm 23 is placed at central points between each adjacent pair of the roller stands 22 which are positioned at predetermined intervals in a longitudinal direction of the fine spinning machine.
  • the proximal end of each support arm is supported by a support beam (not shown) provided so as to extend in a longitudinal direction of the fine spinning machine at the rear of the back bottom roller (not shown).
  • Each rotary shaft 19 is supported between the corresponding roller stands 22 and support arms 23.
  • Each rotary shaft 19 is formed so as to have a predetermined length corresponding to a certain number of spindles (four spindles in this embodiment). Bearings (not shown) which are fixed to the two ends of each shaft 19 are engaged with end plugs 25.
  • the end plugs 25 are supported by support portions 22a and 23a which are provided in engagement parts 25a on the roller stands 22 and the support arms 23.
  • the rotary shaft 19 is thereby supported in such a manner as to be rotatable between the roller stands 22 and the support arms 23.
  • Each of the support portions 22a and 23a is formed in such a manner as to be able to support two of the end plugs 25, and is thus capable of supporting the end plugs 25 which are attached to end portions of an adjacent pair of the rotary shafts 19.
  • a gear 26 is provided at the center of each rotary shaft 19 in a longitudinal direction as a rotational force transmitting portion for transmitting a rotational force from a driving source.
  • the gear 26 is integrally formed with the rotary shaft 19.
  • the front bottom rollers 14 are used as the driving source of the rotary shafts 19, and a gear portion 14a (shown in Fig. 1A ) is formed on each front bottom roller 14 in a position such as to face the corresponding gear 26.
  • an intermediate gear 28 is supported by a support arm 27 which is fixed to the support beam on the proximal end so as to be rotatable, and the intermediate gear 28 engages with the gear portion 14a and the gear 26.
  • the rotational force of each front bottom roller 14 is transmitted to the corresponding rotary shaft 19 by way of the corresponding set of the gear portion 14a, the intermediate gear 28, and the gear 26.
  • a suction duct (not shown) is provided on the fine spinning machine so as to extend in a longitudinal direction of the fine spinning machine (in a direction perpendicular to the paper in the case of Fig. 1A ).
  • the suction portion 17 is provided with suction pipes 29 and 30 which extend parallel to the rotary shafts 19, and a connecting tube 31 which is linked to the suction duct so as to apply negative pressure onto the suction pipes 29 and 30.
  • the connecting tube 31 is positioned at the front side of the gears 26 so that a portion serves as a cover for the gears 26 and the intermediate gears 28, and is connected to the suction duct at the proximal end by means of a linking tube 32 that assumes a pleated form.
  • the first end portions of suction pipes 29 and 30 are engaged with engagement holes which are created on both sides, left and right, of an end portion of the connecting tube 31, and the second end portions are engaged with end plugs 25.
  • the suction pipe 29 has a guide surface 29b where suction holes 29a are created so as to extend toward the upstream side of the nipping point between the rollers in the nip roller pairs 16, in a direction in which fiber bundles (fleece) F move.
  • the suction pipe 30 has a guide surface 30b where suction holes 30a are created so as to extend toward the downstream side.
  • the suction pipe 29 is provided so as to be located on the upstream side of the nipping point of the bottom nip rollers 19a, in a direction in which a fiber bundle F moves, and the suction pipe 30 is provided so as to be located on the downstream side.
  • suction nozzles 33 of a single type pneumatic apparatus which serves to suck fiber bundles F that are delivered from the draft machine 12 at a time that yarn breaks.
  • the proximal ends of the suction nozzles 33 are connected to the suction duct (not shown).
  • each perforated belt 18 is engaged with the suction pipes 29 and 30 and the corresponding bottom nip roller 19a so that one portion of the belt 18 makes contact with the suction pipes 29 and 30 and another portion makes contact with the bottom nip roller 19a.
  • the perforated belt 18 rolls while sliding along the guide surfaces 29b and 30b in accordance with the rotation of the bottom nip roller 19a.
  • Each perforated belt 18 is formed of a textile of plain weave in a seamless loop form.
  • each perforated belt 18 is formed by cutting a textile woven in a cylindrical form to a predetermined width after a fusing process has been carried out.
  • thermally fusing yarns 34 having a core-sheath structure is used as the yarns that form the textile.
  • sheath portions 34a are fused together at intersecting portions 35 of the yarns that form the textile.
  • the core portions 34b and the sheath portion 34a are respectively made of polyamide, and polyamide with a melting point of 260°C and polyamide with a melting point of 220°C are respectively used for the core portion 34b and the sheath portion 34a.
  • the core portion 34b is formed of a monofilament.
  • the textile is woven with thermally fusing yarns 34 having a diameter (thickness) of from 0.05 mm to 0.15 mm.
  • a thickness is preferably within the range described above.
  • the textile is formed so as to have an aperture ratio of between 25% and 40%.
  • the aperture ratio is defined as (A2/A1) x 100(%), in which, as illustrated in Fig.
  • the area of the portion that is surrounded by the center lines (annotated by broken lines) of two adjacent warp yarns 36a and two adjacent weft yarns 36b is A1
  • the area of the aperture (hatched portion) surrounded by the two warp yarns 36a and the two weft yarns 36b is A2.
  • the yarns that form the textile are not fused at all intersecting portions 35. That is, only part of the intersecting portions 35 are fused, in such a manner that, at least in a longitudinal direction (circumferential direction) of the perforated belt 18, fused regions 37, where fused intersecting portions 35 are adjacent to each other, and non-fused regions 38, where non-fused intersecting portions 35 are adjacent to each other, are alternately arranged.
  • the fused regions 37 and the non-fused regions 38 are provided so as to alternate also in a direction of the width of the perforated belt 18. More specifically, as shown in Fig.
  • a perforated belt 18 on which no fusing process has been carried out is a cylindrical textile that is uniform throughout its entirety, while a perforated belt 18 on which a fusing process has been carried out is formed in such a manner that, as illustrated in Fig. 1B , circular fused regions 37 are distributed approximately uniformly throughout the entirety of the perforated belt 18, and the non-fused regions 38 form the remaining region. Further, in Fig. 1B , the warp yarn 36a and the weft yarn 36b are not shown.
  • Each fused regions 37 contains not only fused intersecting portions 35, but also apertures surrounded by fused intersecting portions 35, and each non-fused region 38 contains not only non-fused intersecting portions 35, but also apertures surrounded by non-fused intersecting portions 35.
  • the thermally fusing yarns 34 are melted also in the vicinity of the intersecting portions 35, and therefore, the aperture ratio in the fused regions 37 becomes lower than the aperture ratio in the non-fused regions 38.
  • the appearances of the fused regions 37 and the non-fused regions 38 are different, and, as shown in Fig. 1B , the fused regions 37 appear to be in a state which is distinguishable from that of the non-fused regions 38.
  • the ratio of fused regions which is the ratio of the total area of the fused regions 37 in relation to the total area of the surface of the perforated belt 18, that is to say, in relation to the sum of the combined total area of the fused regions 37 and the non-fused regions 38, is preferably between 50% and 95%, and more preferably between 70% and 90%. In cases where the ratio of fused regions is less than 50%, the durability of a perforated belt 18 tends to become inadequate, while in cases where the ratio of fused regions exceeds 95%, pliancy of a perforated belt 18 tends to become inadequate.
  • the diameter is preferably no greater than half of the width of the perforated belt 18 and the area is preferably no greater than 100 mm 2 .
  • a manufacturing method for the perforated belt 18 will be described.
  • Productivity is modest in a case where the perforated belt 18 is initially formed so as to have the same width as the final product, and then a fusing process is carried out for the manufacture. Therefore, a cylindrical textile having a length that is a number of times (for example several tens of times) greater than the width of the final product should first be prepared. Since the width of a perforated belt 18 is approximately 15 mm to 25 mm, a cylindrical textile having a length of several hundreds of millimeters should be prepared. Then, as shown in Fig.
  • a fusing process is carried out by means of an apparatus with a fusing process portion 40 where a number of holes 40b are created in a cylindrical body 40a of which the outer diameter is approximately the same as the inner diameter of the cylindrical textile 39.
  • the cylindrical body 40a is formed so as to be longer than the cylindrical textile 39, and holes 40b are created in an area that is greater than the length of the cylindrical textile 39.
  • the holes 40b are created so as to have a size that matches the fused regions 37 of the perforated belt 18, and in locations corresponding to the state of distribution of the fused regions 37.
  • One end of the cylindrical body 40a is closed.
  • a high temperature gas for example, air
  • the high temperature gas that has been supplied within the cylindrical 40a is blown from the holes 40b to the outside of the cylindrical body 40a.
  • the sheath portions 34a are fused in the intersecting portions 35 of the thermally fusing yarns 34 in the regions of the portions corresponding to the holes 40b of the cylindrical textile 39, and thus, fused regions 37 are formed.
  • the cylindrical body 40a is cooled.
  • the cylindrical textile 39 is removed from the cylindrical body 40a. After that, the cylindrical textile 39 is cut into a predetermined width, and thus, the perforated belts 18 are completed.
  • a perforated belt 18 in which fused regions 37 are formed into a desired state can be manufactured by adjusting the size, the number and the state of distribution of the holes 40b which are created in the cylindrical body 40a.
  • fiber bundles F are drafted in the draft machine 12, and after that, guided from delivery roller pairs 13 to the fiber bundle concentrating device 11.
  • the nip roller pairs 16 are rotated slightly faster than the surface speed of the final delivery roller pairs 13, and thus, each fiber bundle F passes through the nipping point of the corresponding nip roller pair 16 in a state such as to have an appropriate degree of tension, and after that, changes in direction and moves to the downstream side while being twisted.
  • the suction in the duct acts on the suction pipes 29 and 30 via the connecting tube 31, and then, the suction through the suction holes 29a and 30a, which are formed in the guide surfaces 29b and 30b, acts on the fiber bundles F by way of the perforated belt 18. Then, the fiber bundles F move to a position corresponding to the suction holes 29a and 30a in a sucked and concentrated state. Accordingly, in contrast to spinning machines which are not equipped with the fiber bundle concentrating device 11, the quality of yarns is enhanced by preventing the production of fluff and cotton waste.
  • This embodiment has the following advantages.
  • the perforated belt 18 is not limited to a configuration in which the fused regions 37 are distributed uniformly throughout the entirety of the perforated belt 18, and the perforated belt 18 may be formed in such a manner that the ratio of the area of the fused regions 37 on the end portions in a widthwise direction is higher than the ratio of the area of fused regions 37 in the widthwise center portion.
  • end portions in a widthwise direction means a range of from 1/4 to 1/3 from the ends in the widthwise direction, and the widthwise center portion is the remaining range of 1/2 to 1/3.
  • ratio of the area of the fused regions 37 means the ratio of the area of the fused regions 37 relative to the total combined area of the fused regions 37 and the non-fused regions 38.
  • fused regions 37 of different sizes are provided on the end portions and in the center, if the ratio of the area on the end portions is higher, it is preferable that, as shown in Fig. 4A , fused regions 37 of a large area are formed on the end portion side, and fused regions 37 of a small area are formed in the center. In such cases, suction through suction holes 29a and 30a uniformly acts on the fiber bundles F.
  • the number of the fused regions 37 aligned in the direction of the width of the perforated belt 18 may be the same for each column in the arrangement.
  • fused regions 37 having different sizes may be mixed in the arrangement.
  • the form of the fused regions 37 is not limited to a circular form, and may be changed to an appropriate form, so as to be for example, polygonal, triangular, quadrilateral, or elliptical.
  • fused regions 37 which extend intermittently in the circumferential direction may be formed at both widthwise ends of the perforated belt 18. In such cases, the presence of non-fused regions 38 between the fused regions 37 ensures the pliancy of the perforated belt 18, and the end portions of the perforated belt 18 are less likely to become frayed.
  • the fusing process of the intersecting portions 35 at the time of manufacturing the perforated belt 18 is not limited to the method in which a high temperature gas is blown out through the holes 40b of the cylindrical body 40a.
  • a method may, for example, be adopted of engaging the cylindrical textile 39 with a roller from the outside, pressing another roller that has protrusions in the same form as the fused regions 37 against the cylindrical textile 39 and rotating the rollers in this state while heating them.
  • the method in which a high temperature gas is used is easier.
  • a fusing process may be carried out on the cylindrical textile 39 which is formed to have the same width as the final product, or the perforated belt 18.
  • the perforated belt 18 is not limited to a belt formed of a textile of plain weave, and textiles woven, for instance, as twill weave may be used.
  • the perforated belt 18 is not limited to a belt formed of a textile, and may be formed of a knit (knitted fabric). In such cases, because of the elasticity of the knitted fabric, a tension apparatus need not be particularly provided in order for the perforated belt 18 to be rotated in a state of appropriate tension.
  • the perforated belt 18 is not limited to a fabric or a knit, and as in the case of the unwoven sheet disclosed in Japanese Laid-Open Patent Publication 2004-346472 , may be formed of a body in a sheet form where two layers of yarns, each of which is formed of yarns aligned in one direction (thermally fusing yarns 34), are laid on top of each other in a state in which the directional alignment of the thermally fusing yarns 34 is such that they cross one another (for example in a perpendicular state) and part of the respective intersecting portions 35 of the thermally fusing yarn 34 are fused.
  • the perforated belt 18 is not limited to being in an endless, seamless loop formed of a textile or knit that is woven or knitted, and may be in loop form with a seam, in which the two ends of a textile or knit in a band form are adhered to each other.
  • the entirety of the yarns of the textile being made of thermally fusing yarns
  • only the warp yarns or the weft yarns of the fabric for forming the perforated belt 18 may be made of thermally fusing yarns.
  • the thermally fusing yarns 34 are not limited to a type in which the sheath portions 34a and the core portions 34b are both made of polyamide.
  • Thermally fusing yarns, in which both the sheath portions 34a and the core portions 34b are made of polyester, or thermally fusing yarns, in whch the sheath portions 34a are made of polyester and the core portions 34b are made of polyamide, may be used.
  • the perforated belt 18 may have an antistatic function.
  • each unit of the rotary shafts 19 and the suction pipes 29 and 30 corresponds to four of the spindles.
  • each unit may correspond to the spindles between the roller stands 22 (for example, eight spindles), or to two spindles.
  • all units need not necessarily correspond to the same number of the spindles. That is, thee spindles between roller stands 22 may be divided into two groups of different numbers of spindle (for example, six spindles and two spindles), and two types of units may be provided.
  • the configuration is not limited to one in which the suction holes 29a and 30a are provided on the upstream side and on the downstream side of the nipping point of the fiber bundle F, and the configuration may have suction pipes 29 with suction holes 29a only upstream from the nipping point.
  • the suction pipes 30 pipes instead of the suction pipes 30 pipes, bars may be used that have the same outer shape as the suction pipes 30 and in which no suction holes 30a are formed.
  • the method of manufacturing or assembling can accordingly be substantially identical to that in the embodiment described above.
  • the perforated belt 18 may be wrapped around the suction pipe 29 and the bottom nip roller 19a without a suction pipe 30.
  • the delivery portion of the fiber bundle concentrating device 11 is not limited to a configuration where the nip roller pairs 16 are installed.
  • a suction pipe 44 may be provided of which a cross section is approximately egg-shape, and suction holes 44a may be created in predetermined locations in the suction pipe 44.
  • the perforated belt 18 is wrapped around the outer periphery of the suction pipe 44 and the tension roller 45 so as to be slidable.
  • the rotation of the front top roller 15 is transmitted to the top nip roller 20 by way of the gear 46, so that the top nip roller 20 is driven while being pressed against the perforated belt 18, and the perforated belt 18 is thereby driven.
  • a common rotary shaft 19 with bottom nip rollers 19a may be used for all the spindles, so as to be driven by a motor via gears which are provided at the gear end of the fine spinning machine, in the same manner as the front bottom rollers 14 of the draft machine 12.
  • the perforated belt 18 may be provided at the top side.
  • the invention may be applied to a draft machine for other types of spinning machines and is not limited to a draft machine for a fine spinning machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Woven Fabrics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Nonwoven Fabrics (AREA)

Claims (7)

  1. Faserbündelverdichtungsvorrichtung in einer Spinnmaschine, wobei die Vorrichtung Faserbündel (F) verdichtet, die durch ein Ziehteil (12) gezogen sind, wobei die Vorrichtung ferner Folgendes aufweist:
    einen Faserbündelzufuhrabschnitt einschließlich einer Andruckwalze (19a, 20), wobei sich der Faserbündelzufuhrabschnitt stromabwärts eines Endzufuhrwalzenpaars (13) des Zugteils befindet;
    einen Saugabschnitt (17) mit einer Führungsfläche (29b), wobei die Führungsfläche (29b) ein Saugloch (29a) wenigstens in einem Abschnitt stromabwärts eines Spaltpunkts des Zuführabschnitts in einer Bewegungsrichtung der Faserbündel aufweist; und
    ein perforiertes Band (18), das sich dreht, während es an der Führungsfläche gleitet, wobei das perforierte Band als ein Blattkörper ausgebildet ist, das sich schneidende Sätze von Garnen (34) enthält, wobei die Faserbündelverdichtungsvorrichtung dadurch gekennzeichnet ist, dass:
    ein Teil von sich schneidenden Abschnitten (35) der Garne derart fusioniert sind, dass fusionierte Bereiche (37), an denen die fusionierten sich schneidenden Abschnitte (35) benachbart zueinander sind, und nicht fusionierte Bereiche (38), an denen die nicht fusionierten sich schneidenden Abschnitte benachbart zueinander sind, abwechselnd wenigstens in einer Umfangsrichtung des perforierten Bands angeordnet sind.
  2. Faserbündelverdichtungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die fusionierten Bereiche (37) und die nicht fusionierten Bereiche (38) abwechselnd in einer Breitenrichtung des perforierten Bands (18) angeordnet sind.
  3. Faserbündelverdichtungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Verhältnis des Gesamtbereichs der fusionierten Bereiche (37) zu dem Gesamtbereich der Fläche des perforierten Bands (18) 50 bis 95% einschließlich ist.
  4. Faserbündelverdichtungsvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Garne aus Polyamid hergestellt sind.
  5. Faserbündelverdichtungsvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das perforierte Band (18) in solch einer Art und Weise ausgebildet ist, dass das Verhältnis des Bereichs der fusionierten Bereiche (37) in einem der Breite nach genommenen Endabschnitt des perforierten Bands (18) höher ist als ein Verhältnis des Bereichs der fusionierten Bereiche (37) in einem der Breite nach genommenen Mittenabschnitt.
  6. Verfahren zur Herstellung eines perforierten Bands, gekennzeichnet durch:
    Ausbilden eines zylindrischen Blattkörpers mit sich schneidenden Sätzen von Garnen (34), wobei die Garne (34) in wenigstens einem der Sätze thermisch fusionierende Garne sind; und
    in Eingriff bringen des Blattkörpers mit einem zylindrischen Körper (40a) mit einem geschlossenen Ende von der Außenseite her, wobei der zylindrische Körper (40a) eine Vielzahl von Löchern (40b) in einer Umfangsfläche aufweist, und Zuführen eines Gases einer Temperatur in den Zylinderkörper, die gleich wie oder höher als der Schmelzpunkt der thermisch fusionierenden Garne ist, wodurch die sich schneidenden Garne miteinander an Positionen des Blattkörpers, die den Löchern entsprechen, durch die Hitze des Gases fusionieren, das durch die Löcher geblasen wird.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass der Blattkörper eine Breite aufweist, die ein Vielfaches der Breite eines letztendlich hergestellten perforierten Bands (18) ist, wobei, nachdem das Fusionieren der sich schneidenden Garne (34) beendet ist, der Blattkörper geschnitten wird, um eine Vielzahl von perforierten Bändern auszubilden.
EP06123395A 2005-11-07 2006-11-02 Vorrichtung zum Verdichten von Faserbündeln in einer Spinnmaschine und Verfahren zum Herstellen eines perforierten Riemchens Active EP1783253B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005322782A JP4774930B2 (ja) 2005-11-07 2005-11-07 紡機における繊維束集束装置

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EP1783253A2 EP1783253A2 (de) 2007-05-09
EP1783253A3 EP1783253A3 (de) 2009-10-28
EP1783253B1 true EP1783253B1 (de) 2012-04-11

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JP5282724B2 (ja) * 2009-12-09 2013-09-04 株式会社豊田自動織機 紡機の繊維束集束装置における吸引パイプ及びその製造方法
DE102012003179A1 (de) * 2012-02-17 2013-08-22 Oerlikon Textile Components Gmbh Streckwerk zum Verziehen eines Vorgarns
IN2014DE03384A (de) * 2013-12-05 2015-08-21 Rieter Ag Maschf
CN109295567B (zh) * 2018-11-21 2021-07-09 东华大学 一种提高紧密纺纱线性能的装置及方法
CN112481755A (zh) * 2020-10-27 2021-03-12 徐时平 气流槽聚紧密纺装置的集聚罗拉组件及紧密纺装置

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JP4774930B2 (ja) 2011-09-21
CN1962979A (zh) 2007-05-16
KR20070049053A (ko) 2007-05-10
CN1962979B (zh) 2010-09-29
KR100733754B1 (ko) 2007-06-29
EP1783253A3 (de) 2009-10-28
EP1783253A2 (de) 2007-05-09

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